I have been running robot vacuums in a ranch house with hardwood in the living areas, tile in the kitchen, and low-pile carpet in the bedrooms for about four years, with a husky and a lab doing their best to cover every square foot in fur. So when I sit down to write a self-emptying robot vacuum and mop comparison, I am not sorting spec sheets for fun. I am trying to answer the only question that actually matters six months after the box arrives: which of these will still be doing useful work without me standing over it?
One thing upfront, because it matters more than any feature list. I have not had all four of these units on my floor. What I do have is a long history of pulling bots out from under the sofa table, a spreadsheet of stuck events and dock-finding runs from the three robots I have owned, and a fairly strong opinion about which promises on a product listing survive contact with two shedding dogs. So treat this as a buyer's comparison grounded in what each listing actually claims, filtered through what a real house demands.
If you want the short answer: the dreame X50 Ultra is the most interesting middle of this group, because it sits between the budget end and the flagship end while pitching an all-in-one self-cleaning dock, and the Lefant M2 Plus is the value pick if mapping and no-go zones matter more to you than raw suction numbers. Everything else is a trade-off, and the trade-offs are specific enough to write down.
Lefant Robot Vacuum and Mop Combo, M2 Plus Black
6000Pa suction, 140-minute runtime, multi-floor mapping, no-go zones, and a 75-day self-emptying dock at the lowest price of the four
6000Pa is the smallest suction figure here, and there is no hot-water mop washing or AI obstacle avoidance in the listing
eufy E28 Robot Vacuum and Mop, 20,000 Pa, Portable Carpet Cleaning
The highest suction rating in the group by a wide margin, plus portable carpet cleaning in the box
No self-emptying dock, no mapping or no-go zone claims, and no mop washing features listed
dreame X50 Ultra with Self-Cleaning All in One Robot Vacuum and Mop
An all-in-one self-cleaning dock and a price that lands between the budget pick and the flagship
The listing leans on the dock and says very little about navigation, suction, or runtime, so you are buying on reputation
iRobot Roomba 705X Robot Vacuum and Mop Combo, 175x More Suction, Extending Self-Cleaning Roller Mop, Multifunction Dock, 75 Day Self-Emptying, Hot Wash/Dry, AI Obstacle Avoidance, Ideal for Pet Hair
The most complete feature list of the four: hot wash and dry mop care, AI obstacle avoidance, 75-day self-emptying, and a pet hair pitch
It is the flagship price here, and the suction claim is relative marketing rather than a number you can compare against the others
Prices and availability were captured from Amazon Creators API and may change.
What these four actually have in common
Three of the four name a self-emptying dock in the product title. The Roomba 705X claims 75 days, the Lefant M2 Plus claims 75 days, and the dreame X50 Ultra pitches an all-in-one self-cleaning dock. The eufy E28 is the odd one out: its headline is 20,000 Pa of suction and portable carpet cleaning, not a dock.
That difference decides more than any suction number. A self-emptying dock means the dust you pull off the floor ends up in a bag in a base station instead of a cup you tip into the trash every other day. In a house with a husky and a lab, that is not a luxury feature. That is the difference between a robot you run daily and a robot you run when you remember.
What it does not mean is that you never touch the machine. You still clean filters, you still deal with hair wrapped around a roller, and the base itself eventually needs attention. A 75-day claim is 75 days of dirt capacity, not 75 days of ignoring the robot.
The dock is the feature that ages best
Here is the pattern I have watched across the three robots I have owned. The cleaning performance differences between a decent mid-tier bot and a great one are real but modest. The convenience differences compound every single day.
That is why the Roomba 705X listing is built the way it is. Hot wash and dry for the mop, a multifunction dock, 75-day self-emptying, AI obstacle avoidance. Each of those is a small daily annoyance removed. It is also why the dreame X50 Ultra is interesting at its price point: an all-in-one dock in the upper-middle of this group is where the value conversation usually lives.
The Lefant M2 Plus complicates that story in a good way. A 75-day self-emptying dock, multi-floor mapping, no-go zones, and a 140-minute runtime at the lowest price in this comparison is a lot of the convenience argument for a fraction of the flagship spend. The catch is what is not on the list, which I get to below.
Navigation and no-go zones separate the field
Navigation is everything. Suction means nothing if the robot cannot find the dock from the back bedroom or gets stuck on the same phone cord twice. If you have ever owned a random-navigation bot, you know the drill: it bumps a wall, turns, re-covers the same corner three times, skips the hallway, and eventually parks itself under the sofa table until you go get it.
Two of these four put navigation features in the listing. The Lefant M2 Plus names multi-floor mapping and no-go zones, which is exactly the pair of features that lets you fence off the dog bowls and the cable tangle behind the TV stand. The Roomba 705X names AI obstacle avoidance, which is the feature that keeps a bot from eating a charging cable or a stray sock.
The dreame X50 Ultra and the eufy E28 do not spell out their navigation approach in the title. That does not mean they lack it. It means you should confirm it before you buy, because for a robot you plan to schedule and leave, mapping is not optional.
Suction numbers do not travel between brands
This is the part of every robot vacuum comparison where I get annoyed. The eufy E28 claims 20,000 Pa. The Lefant M2 Plus claims 6000Pa. The Roomba 705X claims 175x more suction, which is a relative claim against an earlier Roomba, not a number you can line up next to the other two.
Those figures are not measured the same way, and none of them describes what happens on your floor. A robot with an enormous suction rating and mediocre navigation leaves more debris behind than a modest bot that methodically covers every zone. Pa sells boxes. Coverage and dock reliability are what you actually live with.
What the numbers are useful for is rough positioning. The eufy E28 is clearly pitching itself as the suction-first option in this group. The Lefant M2 Plus is pitching itself as the everything-else-first option. The Roomba and the dreame are pitching the dock and the ecosystem.
Mopping on all four is light maintenance
Every one of these is a vacuum and mop combo, and every one of them needs the same reality check. Robot mopping handles everyday footprints, light dust, and the film that builds up in a kitchen. It does not remove dried-on stains, and it does not replace the mop you keep in the closet.
The Roomba 705X is the only one here that lists hot wash and dry for its roller mop, and that matters more than people expect. A mop pad that sits damp in a dock grows a smell. Hot water washing and drying is the feature that keeps you from noticing the mop exists, which is the entire point.
The Lefant M2 Plus, the eufy E28, and the dreame X50 Ultra do not list mop washing in their titles. If mopping is a real priority for you rather than a bonus, that is the gap to research before you spend.
Pet hair is the test that decides everything
My husky sheds a whole second dog every spring. If a robot cannot handle that, the app does not matter, the dock does not matter, and the price does not matter.
The Roomba 705X is the only listing here that says pet hair out loud, and it pairs that with the AI obstacle avoidance that keeps a bot from dragging a sock around the living room. For a shedding household, that combination is coherent.
For everyone else, think about volume. Self-emptying docks exist because hair fills bins fast. A 75-day dock claim from the Lefant or the Roomba is a hair-volume claim as much as a dust claim, and in a two-dog house I would expect to hit the practical limit well before the calendar one.
Runtime, and why 140 minutes is the number to beat
The Lefant M2 Plus lists a 140-minute runtime. None of the other three put a runtime figure in their titles.
That silence is not a red flag on its own, but it does mean the Lefant is the only one in this comparison where you can do the math before buying. My main floor is roughly 1,100 square feet of mixed surface, and 140 minutes is comfortably a single-charge run for that at moderate power. If your house is bigger or your carpet is thicker, ask what the real single-charge coverage looks like, because claimed runtime and real runtime are different animals.
What the extra money buys
Lining these four up by price tells the story better than any feature table.
At the bottom is the Lefant M2 Plus, which gives you mapping, no-go zones, a 75-day dock, and a long runtime. At the top is the Roomba 705X, which adds hot mop washing and drying, AI obstacle avoidance, and a brand that a lot of people trust specifically because they never want to troubleshoot anything. In between sit the eufy E28 with the biggest suction claim and a portable carpet cleaner, and the dreame X50 Ultra with an all-in-one self-cleaning dock.
The honest read: you are not paying for double the cleaning as you move up. You are paying for convenience, polish, and the number of small daily tasks that disappear. Whether that is worth the difference is a personal math problem, and anyone who tells you otherwise is selling something.
Who should buy which
Buy the Lefant M2 Plus if you want mapping and no-go zones, a self-emptying dock, and a long runtime at the lowest spend in this group, and you accept the smallest suction figure here. Visit on Amazon →
Buy the eufy E28 if suction is your priority, you have carpet that needs a serious pass, and the portable carpet cleaning in the box appeals to you more than a self-emptying dock. Visit on Amazon →
Buy the dreame X50 Ultra if the all-in-one self-cleaning dock is the feature you care about most and you want it without paying flagship money. Visit on Amazon →
Buy the iRobot Roomba 705X if you have pets, you want the mop washed and dried for you, and you would rather pay more than think about the robot again. Visit on Amazon →
What I would verify before buying any of them
Three questions, and I would ask them of every listing here.
First, can it find the dock from the farthest room in your house without help? A dock-finding run from the back bedroom tells you more than a hallway test ever will.
Second, does the app let you draw no-go zones without a fight? If the answer is vague, plan on babysitting the robot around cables and pet bowls.
Third, what does the base station actually need from you, and how often? Self-emptying docks still need filters and bags, and a "self-cleaning" dock still has parts that get gross.
Bottom line
A robot vacuum is a maintenance tool, not a replacement for your real vacuum, and none of these four changes that. What they change is how much of the maintenance you personally do. The Lefant M2 Plus wins the value argument, the eufy E28 wins the raw suction argument, the dreame X50 Ultra sits in the middle with the dock as its pitch, and the Roomba 705X is the one to buy if pet hair and never thinking about the mop are the two things you care about most. Pick the trade-off you can live with, then check the current Amazon price before you commit.