I've tested nearly every Roomba series released since 2019 in my own home, and have composed a running Roomba model comparison guide to all of the best iRobot options at any point in the year.

It does this using a series of sensors and a camera. It took two run-throughs (two full charges) to map out my floorplan. The mapping tech on the Roomba is something to behold. It's incredibly ...