Ours is collecting dust because it was so flaky. You can solve the base problem by putting some grippy tape in the wheel wells. (They made the charging base out of some plastic that's impassible for the robot.)

I realized I was spending 30-60 minutes debugging and manually charging our roombas for each (usually aborted) run. Once the Amazon acquisition was announced, I realized it meant that they'd inevitably send upskirt angle shots of the family to Bezos for ad targeting and forwarding to local law enforcement agencies. That was the final straw.

Supposedly, the Chinese ones are slightly better for privacy because you can MITM their backend cloud connection and point it at a local version of whatever service the robot thinks it needs in order to work.

I bought a broom and mop. They're much less work. So were the older, dumber roombas (especially the square mops from the Mint acquisition). YMMV.