T...with tracking turned up all the way, it's acceptable for tracking speed.
I do truly like the Magic Mouse. The momentum type page scrolling is a new experience and like the iPhone, it eases page scrolling. I also have the two finger swipe set for "back" & "forward" on the browser. Neat to go to a site, and with the mouse not moving scroll up and down, and when Im done two finger swipe back and move on to the next webpage.
Regarding the tracking, my Magic Mouse tracked dog slow on my mouse pad. Removed the mouse pad and set the MM on my desk and it tracks much easier.