And I am pretty happy with my Logitech MX 1100. I prefered their "top model" with bluetooth, but I I sent it back two times thanks to the mouse wheel beeing broken about a few hours of usage and the laser being crappy. Their support actually confirmed that problem and told me to get another one instead. That 2.4GHz wireless stuff is actually really crappy compared to bluetooth, but well I managed to get along with it and am quite happy now. I want it to be wireless as it would drive me crazy to have twoe mices and two keyboards with wires on my desk. I like the mouse wheel with the possibility to switch between free rotation and the raster. It is just great to scroll fast through big parts of code. But my magic mouse is of course also very nice for that