I also have a 980 that's going strong. A number of parts replaced over time, so refreshingly repairable. My mother in law has had a whole lineup of Chinese robot vacuums in the time we've owned Roomba and they haven't seemed miraculously more effective. Ours does get stuck occasionally, but it runs every day so...it's not a huge deal if it doesn't finish on any given day.
I think a lot of people who have pets or kids who are outside a lot and some rooms with hard floors would be pleasantly surprised at how good even a really mediocre mopping does when it's done often enough.
