I have five cats and there is always cat hair everywhere. Actually, you can sometimes find, in a corner somwhere, a hairball that is so large that you actually think it is another animal! Oh, how awful!! It didn't seem to matter how often I vacuumed, there was always cat hair around, until I found the Dyson DC17 vacuum. I had heard that it was a good vacuum but I was a little hesitant to spend close to $500 on a vacuum. However, I bit the bullet and bought one about eight months ago and I can say, without hesitation, that this is the best vacuum I have ever owned. You can actually see...