Has many uses and does everything very well. Kind of like the jack of all trades but master of none in the vac category. Maneuverability I would have to give this vacs highest ranking to maneuverability. Easy to turn and move into any space, light enough to man handle up stairs and down stairs. The narrower front end means it can fit in smaller tighter places others vacs can't. Ease of Maintenance Never had to perform too much maintenance on the vac. Other than emptying the dirt cup it held up great. Emptying it wasn't the hardest thing in the world, but there were quite a few steps to getting the cup out so you could empty it. Could have been thought out a bit better to make it easiery. Suction Performance Suction performance on this thing was pretty darn good. You just needed to make sure you cleaned out the filters once about once a month. The suction was better than most up rights i have tried. Versatility This thing has plenty of versatility. Hand vac, upright, hard woods, carpet, I would even use it to clean the car. Design It has a lot going for it so the design is up there, but changing from one setting to another wasn't always the most intuitive. After a while you learn it though and it becomes easier. Durability Like most shark products it held up great. In fact we never had an issue with it breaking down. Our only issue was one of the attachements was a tad on the fragile side. But we out grew the vacuum before the vacuum could break on us. In fact as far as I know, 4 years later my buddy is still using this.