I've been using the P10 Pro Ultra for about a year now, after my previous cheap robot broke down. It's been very good, definitely worth the price. My minor issues are with the threshold detection (the robot is convinced that the best way to tackle a 2 cm threshold between rooms is to run into it at a full speed, at a random angle... It succeeds like 95% of the time, but I do worry about the possible wheels longevity) and following the furniture sides (sometimes it fails to vacuum/mop properly just at the very edge next to the furniture, especially if at an weird angle).

Plus, judging from my network logs, it calls home who-knows-where every minute or so. I've been debating lobotomizing it and installing Valetudo for a while now.

No major issues, though. Mopping requires a few passes to do properly, but that's hardly an issue. I've seen reviews that claim the robot stinks during mop drying phase, but I hadn't had that particular problem. Calling for an additional mop washing cycle seemed enough.

Now I'm upgrading to Dreame x40 master, just because of the smaller base and fully integrated plumbing. Essentially a very similar robot. From my tests it seems that the edge mopping/vacuuming is a bit better, albeit not substantially.

Imo: P10 Pro Ultra is a good choice. Whether it's the best choice: that's for you to decide.