Originally Posted by Cabbs
You mean optical and laser? Laser mice will track on more surfaces and more precisely than an optical mouse.
Consider the Steelseries Ikari. They come in optical and laser, and a lot of people like them. I'm considering getting one next paycheck.
No he means "Infared"
1800dpi Razer Precision™ 3G infrared sensor
Ergonomic right-handed design
1000Hz Ultrapolling™ / 1ms response
Five independently programmable Hyperesponse™ buttons
On-The-Fly Sensitivity™ adjustment
Ultra-large non-slip buttons
16-bit ultra-wide data path
6400 frames per second (5.8 megapixels per second)
60–120 inches per second and 15g of acceleration
Zero-acoustic Ultraslick™ Teflon feet
Gold-plated USB connector
Seven-foot, lightweight, non-tangle cord
Approximate size: 128mm (length) x 70mm (width) x 42.5mm (height)
Highly recommend this mouse! The "1000Hz Ultrapolling™ / 1ms response" really shows!