This is a very high quality vacuum cleaner. High-quality materials: ABS plastic, Japanese NIDEC motor, DuPont central brush, BASF side brush, make Chinese products out of it on the contrary, where the developments belong to Roborock, and it is assembled from components of well-known world manufacturers. Compared with iRobot products, the advantages of S5 Max, in addition to price, are laser lidar navigation, which makes it completely insensitive to light, advanced moisturizing cleaning, less noise, more efficient cleaning algorithm, more efficient cleaning of carpets with a central brush, and not rollers. I don’t compare with floor polishers, since this is a different class of devices. Compared to the previous S5 Sweep One, S5 Max has an electronically controlled humidification cleaning, it has a peristaltic pump, which works on the principle of an injection dropper, which makes it possible to adjust the degree of water supply by room, for each coating individually. In the event of a stop, of course, and return to the base, the water supply stops completely. It's already perfect, but you need statistics on how long it's been running.