My family had Roomba 880980 and now S9. The S9 takes it to a huge level. The 980 was great but broken, won't charge and keeps saying it's dirty. It happened just in time for the new release! Pros: New design handles corners better Better battery life than Roomba 980 Sometimes 2 hours 3 empty if you have a home base Easy to clean Low maintenance Great display. Sometimes it can get stuck. I can't find my home base every time. Parts can be expensive. If it helps, please click "thumbs up"! :)