I've held out on buying a robot vacuum for many years. Now, I don't know why I waited so long! Shark has become a favorite brand in our home and they continue to not disappoint. The 2-in-1 AI Shark Ultra is IT! I love being able to keep our floors clean without having to do them daily - the 2-in-1 robot does it for me! We're a two-dog house and it seems to be keeping up well!