Roomba s9+ vs other Roombas: s9+ wins for carpet with 2500Pa suction and D-shape design

The s9+ has the strongest suction in iRobot’s lineup at 2500Pa, while other Roombas are generalists. Its D-shape lets it jam into corners and baseboards, and the suction grabs deeply settled dirt from carpet fibers. If your house is mostly carpet, this is the one — but it’s the most expensive Roomba for a reason.