Introduction
I bought both the Aiper Seagull SE and the Dolphin Premier with my own money and ran them in my own pool, because that's the only way I trust a comparison. And these two aren't close. They sit at opposite ends of the robotic pool cleaner world, and after three months of using both, I can tell you exactly where each one lands and who it's actually for.
The Seagull SE looks the part. That cordless, no-hose design is genuinely appealing, and the price is easy on the wallet. But it didn't take long for the shine to wear off. The biggest problem is simple: it only cleans the floor. Walls, steps, waterline, forget it. The battery is better than older Aiper units, but I was still charging it every single day to keep up, and even then it under-delivered on cleaning and filtration. I dig into every one of those issues in my full Aiper Seagull SE review.
Then there's the Dolphin Premier. From the first cycle, it was obvious why this thing has the reputation it does. Dual scrubbing brushes, a filtration setup with three different media options, and coverage that reaches every corner of the pool including the waterline that most robots skip. It's a heavier, more serious machine, and it cleans like one. Everything I saw is in my full Dolphin Premier review.
"The Premier earns its 'Waterline King' nickname the honest way, by actually scrubbing the waterline."
Side by side, the gap is hard to overstate. The Seagull SE's cordless convenience is real, but it comes at the cost of the power, filtration, and navigation you actually need, which means you finish the job by hand. The Premier does the opposite: it takes the whole thing off your plate and cleans more thoroughly than I'd manage myself.
In the next section I'll walk through how I test these robots, what I'm actually watching for over three months, and why those things decide whether a cleaner is worth your money.
How We Test
I ran the Aiper Seagull SE for three straight months, watching the three things that actually matter in daily use: how much of the pool it covers, how well it filters, and whether it holds up. Short version, it disappointed me in the areas I care about most.
Coverage was the first letdown. The Seagull SE cleans the floor and basically nothing else, so if your pool has walls or a sloped section, you're on your own for those. In my pool it kept wandering down into the deep end and couldn't climb back out, which cut its useful cleaning down even further. Watching it strand itself got old fast.
Filtration was no better. It runs a single flat filter that let smaller particles slip right through and clogged on bigger debris, so I was pulling it out to rinse it constantly. Compare that to something like the Dolphin Escape, which handles debris in a completely different league.
The rest of the package rounds out the picture. Battery life is only marginally better than the old models, so daily recharging is the reality, and the warranty is a short one year. Between the recharging grind and that thin warranty, this can turn into an expensive lesson quickly.
The Dolphin Premier got the same three months, and the experience couldn't have been more different. It's a robust, seriously-built machine, and I threw a bunch of different conditions at it. It just kept delivering.
Coverage is the headline. The Premier is built to clean every inch, floor to waterline, and that waterline reach is exactly what the Seagull SE can't touch. It's the difference between a robot you supervise and one you actually trust to finish the job.
On filtration, the Premier gives you three options: an oversized leaf bag, NanoFilters, and standard cartridge filters. That range means it catches everything from big leaves down to fine grit, and swapping media to match the mess became something I relied on every week.
Feature-wise it's hard to beat. Dual scrubbing brushes, a programmable weekly timer, and a three-year warranty put it well ahead of the Seagull SE on both capability and durability. The Wi-Fi and app control make scheduling and managing cleanings genuinely easy instead of a chore.
Coverage
Put the coverage of the Aiper Seagull SE next to the Dolphin Premier and it's not a fair fight. The Seagull SE is built to do one thing, clean the floor, which makes it a poor match for any pool with walls or slopes. If your pool is anything but a flat rectangle, that limitation stings.
I saw it play out over and over. The Seagull SE left debris behind, couldn't handle inclines, and kept getting stuck in the deep end. That runs flat against Aiper's claim that it suits all pools including inground ones, which usually need a lot more than floor-only cleaning.
The Premier is the opposite story. It's engineered to clean the whole pool, floor to waterline, and it uses dual scrubbing brushes plus a dual stabilizer to defy gravity and hold the walls and waterline. That's what makes it a genuinely thorough cleaner instead of a floor sweeper.
"The Premier doesn't skip parts of your pool. It cleans the whole thing."
Part of the Seagull SE's problem is that it has no real onboard navigation. It bounces around a random path, misses whole sections, and leaves you to finish by hand. When a robot can't cover the pool on its own, coverage and cleaning both suffer.
The Premier navigates with purpose instead. It works a calculated path so the entire pool gets cleaned, including that waterline band where dirt and oils love to collect.
The scores line up with what I watched. The Aiper Seagull SE earns a 3 out of 10 for coverage, which is exactly what you'd expect from a floor-only robot. The Dolphin Premier earns a perfect 10, reflecting how completely and efficiently it cleans.
On coverage there's no debate. The Premier cleans more of your pool and does it with more reliability, which makes it the far better buy for anyone who wants the cleaning genuinely handled instead of half-done.
Filters
Line up the filtration on the Aiper Seagull SE against the Dolphin Premier and the difference jumps out immediately. The Seagull SE runs a single flat filter with limited reach. It misses the smaller particles, which is why the water kept looking cloudy, and the design isn't especially easy to rinse either.
The Premier plays a different game with its Multi-Media filtration. You get three separate options: an oversized leaf bag, NanoFilters, and standard cartridge filters. That range lets it grab everything from big leaves down to near-microscopic grit, and you pick the media to match whatever your pool is throwing at it.
"Three filter options means you match the media to the mess, instead of hoping one filter does it all."
Honestly, I reach for the Premier every time because the filtration is so much better. The NanoFilters stand out most, pulling out the tiny particles that fog up the water, so the pool actually looks clean afterward. The Seagull SE simply can't do that.
For debris capture, that oversized leaf bag is a lifesaver if you've got trees overhead. It handles leaves plus the bigger stuff like acorns and twigs, and then the NanoFilters take over on the fine particles, so you get clear water instead of a haze.
The scores tell the same story. The Aiper Seagull SE lands a 2 out of 10 on filtration because that basic flat filter just doesn't do meaningful work. The Dolphin Premier earns a full 10 out of 10 thanks to a Multi-Media system that shrugs off every debris size.
So the filtration winner is the Dolphin Premier, no contest. Between the oversized leaf bag and the NanoFilters, it cleans consistently and cleans well. The Seagull SE is cheaper, sure, but its weak filtration just hands the leftover work back to you.
Feature Set
The feature lists on the Aiper Seagull SE and the Dolphin Premier aren't in the same conversation. Start with the Seagull SE. It's sold as an affordable, entry-level cordless robot, and the design looks slick, but the features don't back up the looks. Charging is down to about 2.5 hours for 90 minutes of runtime, which sounds like progress until you realize it still means charging every single day. For a robot you want to set and forget, that's a real drag.
Aiper also touts improved battery life, but the user reviews don't agree, with plenty of reports of batteries fading fast, which puts a question mark over the whole thing's longevity. Add it up and the Seagull SE's feature set earns a 3 out of 10, which matches how limited and high-maintenance it is.
The Premier is a different animal, and its feature set is exactly why the higher price makes sense. It runs dual commercial-grade motors for more power and better efficiency, moving an impressive 4,500 gallons per hour, on par with a pool pump. That flow shows up as genuinely cleaner water and surfaces. A dual stabilizer helps it climb and hold the walls and waterline while it works.
"Two commercial-grade motors and 4,500 gallons an hour. The Premier doesn't just move water, it moves a lot of it."
Then there's the programmable weekly timer, which lets you set a schedule that fits your life, daily, every other day, or every three days. That's the kind of automation the Seagull SE can't touch. The Premier also has Media-Alert, which tracks the filter in real time and tells you when it's time to clean it, so you're not guessing.
Usability is another win. The Premier includes an optional remote control, which is rare on today's robots and handy when you want to spot-clean a specific area yourself. Pair that with the solid build and the easy power supply, and the whole thing is built for convenience, which is why it lands a 9.4 out of 10 for features.
Warranty seals it. The Seagull SE gives you one year, while the Premier comes with three. That longer coverage tells you how much confidence Maytronics has in this machine, and it means your money is protected for a lot longer if something goes wrong.
"Three years of warranty versus one. That gap tells you which company actually stands behind its robot."
Bottom line, the feature gap between the Dolphin Premier and the Aiper Seagull SE is wide. The Seagull SE is cheap but thin on features and heavy on recharging, and its 3 out of 10 feature score reflects that. The Premier brings powerful motors, a dual stabilizer, a programmable timer, Media-Alert, and a three-year warranty, earning a 9.4 out of 10 and making it the high-value pick for anyone who wants thorough, automated cleaning.
Conclusion
Pulling it all together, the gap between the Aiper Seagull SE and the Dolphin Premier is enormous. The Seagull SE lands an overall 2.6, and it earns that number, falling down on coverage, filtration, features, and warranty alike. The cordless design is nice, but there's not enough power or capability behind it to call this a real pool cleaner. It's closer to a toy.
The Premier sits at an overall 9.8, near the top of the whole robotic cleaner market. It covers the entire pool, gives you real filtration choices, and stacks on features that make maintenance close to effortless. Dual scrubbing brushes, commercial-grade motors, versatile filtration, it's a genuine top performer.
"If you want a robot that actually cleans your whole pool and lets you forget about it, the Premier is the one."
Given how far apart these two land on performance and reliability, the Dolphin Premier is the superior choice for anyone serious about automated pool cleaning. It's a real investment, but one that lasts and actually gets the job done.
If the Seagull SE's price is what drew you in but you want something that can actually clean, look at the Dolphin Escape or the Dolphin Cayman instead. Both filter better, cover more of the pool, and carry solid warranties, so you get real value for the money.
Whether you're chasing top-end features or something friendlier on the budget, there are plenty of reliable options beyond the Seagull SE. Take a look at my best pool robots page for a full rundown of what's worth buying at each price point.
To put a bow on it: if you want hands-off cleaning that actually gets the whole pool, the Dolphin Premier is the winner here. Better design, better features, better performance, and a pool that stays clean without you thinking about it.
Alternate Robots
If you're weighing other strong robots, it helps to look past just these two. Beyond the Aiper Seagull SE and the Dolphin Premier, a handful of cleaners stand out for how well they clean and how smart they are, so let me run through the ones I'd actually put on your shortlist.
The first is the Dolphin Sigma. This one's for people who want the best tech and the most thorough clean. It packs dual commercial-grade motors, a built-in gyroscope for smarter navigation, and Wi-Fi through the myDolphin Plus app, all of which add up to precise, well-covered cleaning that's easy to run. The Sigma is especially good at the waterline, which trips up a lot of robots.
Next up is the Dolphin Quantum. It stands out with PowerJet 3D mobility and an oversized filter basket, so it handles both the floor and the waterline well. Dual scrubbing brushes and Smart Nav 2.0 give it thorough coverage and precise pathing, and it ships with two filter types, standard fine and NanoFilters, so it catches debris across the full size range.
"For a modern, do-it-all clean at a fair price, the Quantum is the one I keep coming back to."
Last, the Aquabot REVA is a solid pick if you're budget-minded but still want premium touches. It has a gyroscope and smart navigation to cover the whole pool efficiently, plus a dual-layer filtration system that grabs both big debris and fine particles. App connectivity handles scheduling and control, which makes it a convenient, reliable option.
Each of these has its own strengths, but if I had to point at one, the Dolphin Quantum is the standout. Between its cleaning power, smart tech, and NanoFilters, it delivers real value and a genuinely thorough clean, which is why I recommend it so often.
For more top options across different needs and budgets, head over to my best pool robots page to see everything worth considering.