Sharks may be good performers---but for how long??when the belt wears out or breaks in the powernozzle you are forced into buying another nozzle-if you can get one-or a whole new machine.No thanks.Would rather have a quality bagged vacuum that can last you for YEARS and changing the bag only takes a moment and you don't get dirty-and no messy filters to clean!!I see too many dead sharks in the vac shop dumpster out here!Helpted the store operator clean out his junkpile-guess which is the most common vacuum in that pile---Sharks!!!They makes such a satisfying sound when thrown into the dumpster!