I ordered a V470 a while back specifically so I could play WoW with it. I have regretted it ever since. If I hadn't had to demolish the plastic packaging to take it out I would have returned it. It kept disconnecting and when it was connected it had a horrible "skipping" problem. The cursor wasn't smooth as you moved the mouse, it would skip along.
Subsequently, I purchased an Apple Mighty Mouse and think it's just great. It feels right in my hand, it moves smoothly and doesn't disconnect (well, as often). Some have complained that the scroll ball gets gunked up over time. I've never had that problem. But then again, I actually wash my hands from time to time. LOL.
I recently went to the Apple store to check out the new Magic Mouse and I was pretty darn impressed. Being able to use finger swipes was very cool! I may get one eventually but for now I'm still happy with my Mighty Mouse.