I'm on my third Roborock only because of upgrading to newer models. The other two were sold in full working order, never had any issues.

Yeah mine too like what 6-7 years now. Recently bought another just to have downstairs

Easy to replace parts. Went though a few brushes and filters

My ex has an... S5? for a few years now, so I took his experience as a hopefully positive experience. I ordered my Saros 10R like two and a half months ago, a sale just happened to coincide with the Ecovacs replacement failing. I also got credit for replacement parts, which is nice.

I had issues with initial setup, where my phone needed me to switch off cellular data to pair the bot to the network. Frustrating, found a page on reddit that nudged me in the right direction. Once that was sorted, it's been quite pleasant. Not the lowest maintenence, and it's suction could be... significantly stronger (even on 'max+' it can fail to pickup large hair from the carpet). But overall, I'm really happy with it so far. The app is on much higher quality than Ecovacs too, even though they are... suspiciously similar (down to the UI and location of buttons), the Roborock is waaaaay less buggy and feeding bad info to me.

I bought the extended warranty through RR directly (also the bot directly) instead of a store or third-party. Hopefully if it does have issues in the next... 4 years, I think? that customer service will be pleasant. iR set the bar underground, Ecovacs and Neato were good (above my low expectations), so fingers crossed. Be even better if it manages to work through the warranty without issues, it'd be the first to achieve it for me.