I would argue that they also make superb mouse pads. I have an eXact Mat and.. the difference compared to my previous mouse pads was stunning. So to me they make terrible mice compared to Logitech, but they make great mouse-pads. And before you mock me, with stunning I mean, the mouse literally glides with 0 resistance (At least on the "Speed" surface) the difference to surfaces on all other mouse pads I tested, both cheap and expensive, was like night and day. And I have a wired mouse so (MX518 and all) the low weight and 0 resistance makes it feel like you are moving over air not a rough surface.