Only just received it today so I may be jumping the gun but initial use is beyond any vacuum I have ever used. We were using Moms old canister with a beater brush, thought it worked well.  It started needing parts so we said, lets let it go and get a new one.  Took me a week to decide on a brand and model, opted finally for this Shark model.  Got it today.  Let me say that I keep my home clean, 2200 sq. ft.  I vacuum twice a week as we have 2 dogs and 2 cats.  I am a clean freak or so I thought. . . . . . . . . . . I had to empty the cannister 2.5 times on the first go through on the house.  Amazing pull of dirt out of the rugs as well as the hair.  We had our ducts cleaned last week and now this vacuum, I can breathe.  Glad I got it, hope I feel that way in a year.   But for now, wow oh wow.