iRobot - Next-level navigation. With cutting-edge vSLAM® navigation, the Roomba i7 maps your home to navigate in neat, efficient rows. If it's running low on battery, it charges itself and picks up
Roomba S9 navigation issues since 22.21.1 update (not following zones, takes longer and overall general indecisiveness : r/roomba
Why your Roomba takes a weird path to keep your floors clean - CNET