Just to let you know, I am using this mouse right now and ( I AM NOT PROMOTING) the mouse is well worth the money. The only problem with it, is the FORWARD side button is too far. Perhaps my palm is not as big, I am having trouble reaching the button. It depends on how you hold the mouse. But it has a lot of different DPI settings you can play with and all that crap. Again, I am not promoting, but so far, it is the best mouse I've ever had.