Lol sorry, I just had to.
Anywho, I had a Dyson (regular model, cost $399 new) for about 4 years without any problems at all. Then I moved in with my fiancee who was REALLY hard on vacuums. She went through a vacuum a year she said, and the four broken vacuums out in her garage pretty much proved that to me.
Part of the problem was her pets... she had 5 dogs and 3 cats. So LOTS of pet hair. But her biggest problem was her kids. They would vacuum their rooms without picking anything up. Including change, screws and nails, small toys, etc... so when I brought my Dyson over I told her to tell her kids not to use it without her guidance because I didn't want them destroying my vacuum.
Well, it held up for about a year (her average) and then the shaft belt broke on it (the inner belt, not the one you can change yourself). She said it broke while she was using it, but I don't know that I buy it. At any rate, I took it in to Sears and they charged me $120 bucks to send it out and repair it. The only reason I didn't do it myself was because I couldn't find the parts anywhere to do it myself.
So if you're really hard on vacuums you may want to weigh that repair cost in with your decision. Heck $120 bucks can buy you a really nice vacuum all by itself! But I love Dyson vacuums. I left that one with her when we split up. But next time I'm on the market for a vacuum, I'm going to buy the ball Dyson.