I bought my first mac mini last year and chose the trackpad. I like the ability to use all the gestures such as pinch and zoom, drag windows with 3 fingers,etc. It just feels natural with Lion. The only downside is that after a while my finger tips get cold and feel numb so I sometimes revert to using a bluetooth mouse. I tried the magic mouse last week for while at bestbuy and really liked the gestures on it but I don't regret buying the trackpad.