So you've decided to finally let a robot do the vacuuming — great call. But then you stumbled into a trap almost every first-time buyer falls into: two robots, similar prices, and zero clarity on which one is actually worth your money. The Ecovacs Deebot T90 Pro and the Roborock Saros 20 are sitting in the same price neighbourhood, both promising sparkling floors and a life free from pushing a mop around. The problem? They go about it in very different ways, and picking the wrong one for your home could leave you frustrated rather than free.
The Ecovacs Deebot T90 Pro is for the person who wants a robot that confidently navigates a busy, cluttered home without constantly getting stuck or confused. The Roborock Saros 20 is for the person who wants deep, thorough cleaning performance and a slick app experience they'll actually enjoy using every day.
In this post, we're going to walk through everything that actually matters when you're new to robot vacuums: how well each one avoids your dog's toys and charging cables, how seriously they take mopping versus just leaving damp streaks, how loud they are when you're trying to watch TV, and whether the apps feel like a helpful tool or a puzzle you never asked for. By the end, you'll know exactly which one belongs in your home.
Ecovacs is a Chinese robotics brand that's been making robot vacuums since the early 2010s and has built a reputation for packing in clever obstacle-avoidance technology — their AIVI system (basically a tiny camera and AI brain that recognises objects like socks and cables before running them over) is genuinely one of their standout tricks. Roborock, also Chinese and founded in 2014, became famous for making the robot vacuums that serious clean-freaks swear by, thanks to their obsessively precise navigation and powerful suction. Both the T90 Pro and the Saros 20 sit in the premium mid-range, typically landing between $800 and $1,100 depending on sales, making them a real investment — which is exactly why choosing correctly matters so much.
Obstacle Avoidance: Will It Eat Your Socks or Go Around Them?
This is where Ecovacs has genuinely earned bragging rights. The T90 Pro uses AIVI 3D (think of it as the robot having two eyes and a brain that's been trained to recognise over 100 household objects — cables, shoes, pet waste — and steer around them rather than bulldozing through). The Roborock Saros 20 uses structured light detection (a system that projects a pattern of dots to measure the shape and height of obstacles, like a tiny invisible ruler), which is solid but tends to struggle more with flat, dark objects like black cables on dark floors. If your home looks like a lived-in family house rather than a minimalist showroom, the T90 Pro's obstacle awareness gives it a meaningful real-world edge.
Vacuuming Power: How Clean Is Clean, Really?
The Roborock Saros 20 pulls ahead here with noticeably stronger suction — suction is measured in Pascals (Pa), which is basically just how hard the robot can pull air and lift debris, like comparing a gentle inhale to a proper sneeze. On carpet especially, it extracts more embedded pet hair and fine dust than the T90 Pro, which performs well on hard floors but can feel slightly surface-level on thick rugs. If you have a home full of carpets and a pet that sheds like it's auditioning for a fur coat, the Saros 20's raw cleaning muscle is worth knowing about.
Mopping Performance: Damp Cloth or Actual Clean?
Both robots mop, but there's a real difference in how seriously they take it. The T90 Pro uses a vibrating mopping pad (it oscillates — moves back and forth quickly — to scrub rather than just wipe, like the difference between rubbing a stain and just laying a wet cloth on it), and it lifts the pad automatically when it detects carpet so your rugs don't get soggy. The Saros 20 also mops competently, but its mopping module is less aggressive in its scrubbing action, making it better for light maintenance mopping than tackling dried-on kitchen splashes. For genuinely clean hard floors, the T90 Pro's mopping game is a step up.
Navigation: Does It Know Where It's Going?
Both robots use LiDAR (a laser scanner that spins around and maps your room the same way a bat uses sound — except with light — building a detailed floorplan so the robot knows exactly where it is at all times). In practice, both create accurate maps and clean in neat, efficient rows rather than bouncing randomly around like a lost shopping trolley. The Roborock Saros 20 edges ahead in mapping precision on larger or more complex homes with multiple rooms and awkward layouts, building its map slightly faster and holding onto it more reliably over time. For a standard apartment or smaller house, you honestly won't notice a difference between the two.
App Experience: Your Robot's Remote Control
The Roborock app is widely considered one of the best in the business — it's clean, intuitive, and lets you draw no-go zones (virtual walls that tell the robot to stay out of certain areas, like around the dog's water bowl), schedule cleanings, and check detailed maps without needing a YouTube tutorial first. The Ecovacs HOME app has improved a lot in recent years but still gets occasional reports of connection drops and slightly clunky zone-editing, which can be mildly maddening when you just want to tell it to clean the kitchen. If you're someone who loves tinkering with settings and schedules, the Roborock app will make that genuinely enjoyable rather than a chore.
Noise and Living With It Day-to-Day
Neither of these is a whisper-quiet machine at full power — running a robot vacuum on max suction is roughly comparable to a moderately loud fan, somewhere around 65-70 decibels (about the volume of a normal conversation, so not painful, but you'll notice it). The T90 Pro tends to run slightly quieter at its standard cleaning mode, which is the mode most people use most of the time, making it a bit more background-friendly if you work from home. Both have quieter eco modes that drop the noise significantly, though the trade-off is less suction power, so you'd use those for light daily maintenance rather than a proper deep clean.
So, which one should you buy?
Here's the honest summary: the Ecovacs Deebot T90 Pro is a genuinely brilliant robot for anyone with a messy, obstacle-filled home or hard floors that need real mopping attention — its obstacle detection is class-leading and its mop actually scrubs. The Roborock Saros 20 is the better all-rounder, especially on carpet, and the app experience is so smooth it makes the whole robot vacuum lifestyle feel like something you actually want to engage with rather than tolerate. Neither is a bad choice, and you'd be happy with either one — but they genuinely suit different homes and different people.
Trust your gut here: if you read the mopping section and thought 'yes, that matters to me,' lean toward the T90 Pro. If you read the app section and felt relieved at the idea of something just working simply and cleanly, go with the Saros 20. You know your home better than any spec sheet does, and the best robot vacuum is always the one that fits the life you're actually living — not the one with the most impressive numbers on a box.