I use a Logitech G500 and a Razer Vespula gaming pad. If I have a smooth framrate I can really destroy in shooters. I usually have it at 5700 DPI so I'm crazy accurate and I can do all the twitch movement if I tweak the in game sliders a bit.

The 3 thumb buttons could have been placed better, but I have no problem hitting them in game. The thumb buttons plus the free rolling tilt mouse wheel make web surfing and web design a breeze. The DPI is adjustable, but I rarely make use of that.

The best part is the software that comes with it. I can squeeze up to 10 buttons out of this thing and make macro profiles for each of my games. That and I love its girth and the swappable weights. I use to have a Logitech wheel mouse similar to it years ago and I've been looking for similar ergonomics ever since, and I finally found it at a very affordable price (well compared to wireless mice)