I have a laser mouse (G500), and I have heard that cloth pads don't work well with the sensor, and that hard pads are the best choice. A friend of mine lent me what I suppose is a cloth pad from Steelseries, and I did not notice any problems. While I didn't get the chance to do some proper tests, I can personally say that most of the rumors are bollocks. Still, I would like to know if more sophisticated tests prove otherwise. If any of you have this mouse, I would like to know your experiences.