I know, who rates their vacuums... I do... We're in the process of selling our house, which means alot of foot traffic, and a lot of vacuuming with two dogs in the house. Honestly, the first time we used it, was immediately after a competitor's vacuum. And this Shark picked up TWO BINS of dust and dog hair. Even now, with a relatively fresh carpet, it seems to go a little deeper every time we vacuum with it. Also, the lift off and walk away is just about the coolest feature that I never knew I needed. I can now pick the who thing up so I'm not strategically placing the hose while I clean... 

My only annoyance is that if you empty the bin when the cord is wound up, the electical cord tends to get in the way of the actual clicking of the bin back in place. a minor annoyance, and one that I'll gladly take considering how much it picks up from my carpets.