Had one couple of years now after years of 3 Dysons. The Shark is heavy, cumbersome and absolutely useless on hard floors, it just pushes the crap about in front of the hoover head. I dislike the on/off switch, prefer the trigger as Dyson have. I hate the way the Shark golds up, if you don't clean out the hoover after every use the crap inside settles on the filter, when you start it up next time a cloud of dust blasts out of the motor housing. They have a horrible noise during use and the tool attachments are also cumbersome.
I wish there was something other than Dyson and Shark, I'm looking around. Dyson hoovers were good but are designed on cheapness now.