I really like my Logitech VX Revolution. Got it about a month or two ago and I've been using it a lot, I love the feel of the mouse in general because it's very comfortable (makes my old wireless mouse which is now my parent's feel really bad in comparison). The Logitech Control Center is great also, I have all of the programmable buttons doing exactly what I want them to and they are very useful. It's one of the best purchases I've made in the last year.