got 1 since feb this year, below is my thought:

1. ecosystem - easily integrated with xiaomi home (if you are into it), just make sure the version you get is global or malaysia, otherwise other devices wont appear in your app due to different region.

2. Cost - definitely there's alot robot vacuum in the market, some might even cheaper than this, your call

3. Functionality - got map management (still in beta), dont have intelligent way of avoiding stuff, in the end you still need to move small obstacle otherwise it gonna stuck

4. Cleaning power - definitely powerfull, no issue on carpet* (depends on thickness), downside is if you using with mop it will vacuum and mop the carpet together (might be good or bad depending on your reason why need to wet the carpet)

5. Reparability - this is one of the reason why i bought it, parts easily available online from both our local market as well as international, lots of tutorial online

6. Downside - battery on turbo in my case only cover 300+ sqft in one charge, no lidar support, so it always bump first and avoid later. Need good lighting to operate better but still function. In my case, all of these got no issue

7. Support - didnt test this one yet, dont think xiaomi (mijia) malaysia will even bother since this product is not officially launch here

8. Conclusion - quite satisfied with what they offer, just need to make sure place this away from small kids from play with them. As long as it do the task 80% better than me while saving my time consider good investment.

No issue so far, for the water tank depends on what solution you put inside, if it may yield any residue better clean every time you finish using it.
Easy way is always do cleanup after using.

i did add a cap of dettol antiseptic liquid, but it does not confirm give proper cleaning but at least better than just plain water

always clean up the tank if you does not plan to do any mopping within a week