Great for pet hair. BUT!!

I have two long haired cats and thought this would be the ultimate for pet hair removal. For the most part, it lives up to it's name. But I have had the machine apart three times trying to see why the height adjustment doesn't work. It is simply a poor design. Even on it's highest setting in the upright position, (for when you use the hose) if the vacuum is sitting on carpet the roller brush will hit the carpet and it will try to pull itself across the room. It will cause so much friction, the belts stretch and burn. I am on the third belt so far, and realistically have less than 15 hours on the vacuum. We bought it because it was a consumer reports best buy. I would not recommend this machine.