I just got a new mousepad. It's a Qck+, so I turned down my sensitivity and realized my intellimouse 3.0 has negative acceleration. Is the zowie evo shaped kind of like the ime 3.0 and are they any good? Can anyone with a zowie mouse who also has a large mouse pad test for negative accel. It's pretty easy. All you need to do is open a game like quake that you can set your sensitivity very low (something like 0.5) and move from one side of the mouse pad to the other at a slow or medium speed. And then move the mouse very fast to the other side, if it ends up in the same spot there is no negative or positive accel.