I just started using it and so far so good!  I owned a shark rocket pet pro before but it was 7 yrs old and time to upgrade it.  I’m not really sure about the new brush roll or how well it will hold up yet but it works wonderfully so far. I’m just worried that the fins on the roll will wear out fast.  I never had to replace anything on my last model so I’m hoping this newer model does the same. I trust Shark and this model is powerful but so light weight it doesn’t hurt my back using it.  Plus it goes under and around every piece of furniture with out moving anything and that’s a must in my book!  Great sweeper.  Doesn’t have to be huge to function like a pro!!