A little niggle is related to G Powerplay. When you turn off the computer, the backlight on the mat turns off, but if you activate the mouse, the backlight turns on and stays on until you turn the computer on and off again. Pros: Excellent sensor, the ability to use with the G Powerplay mat, a lot of extras. buttons and all customizable, "infinite" mouse wheel scrolling, easy with the ability to increase the weight with weights. Has cons: Mouse wheel is loud. Price. Almost twice as expensive as the wired version. You cannot turn off the backlight when there is no activity. I use it with G Powerplay, so I don't worry about charging and I would like it to always glow, but this is more of a nitpick.