I really loved my 3M Precision Mousing Surface, but one thing that is wrong with it is the feel it gives to the skin. When I use the mousepad, it feels like my hand has that greasy feeling that you get when you eat tacos, don't wash your hands, and go for a 3 hour session of Dirty Quake 2.
The mouse pad always gives off that feeling, and although it grips the mouse ball really nice, and gives great control, its just not a good feeling when you always feel dirty. Now i use a red hat mouse pad.