Intellimouse 1.1/3.0 or Wheel Mouse Optical. Gaming mice are absolute trash. Over the years I've owned an MX500, MX518, Diamondback, Deathadder V2, G5 and a Kinzu, and I've sold all of them except the Deathadder V2, which is still garbage compared to the IME and WMO. A few of them have really good sensors but that means nothing if it weighs more than a brick/poor build quality/poor cable/poor grip, which a lot of the ones I listed suffer from. I've tried a bunch of them but keep coming back to the Wheel Mouse Optical. They cost like 10 bux, asymmetrical and lightweight. If you want side buttons, get an Intellimouse Explorer. Also, high DPI = better is BS. Get a good pad instead of an overpriced mouse.