My MS Intellimouse Explorer 4 decided to died a few days ago (and had to be replaced once before) so I'm looking for a new mouse for my Macbook Pro. Since BetterTouchTool and other software can add things like middle click on the Apple Magic Mouse it has become more interesting to me since my initial reaction was the lack of buttons - 3 is the minimum for me. However, due to its small size it seems like it would be very awkward to use extensively. I'm rather happy with the Logitech MX518 I have on my desktop PC but kinda like the somewhat smaller HP mouse I have at work. So what is it? Is the Magic Mouse too small to be comfortable or is it actually in a more natural position for the hand than the mice we're used to?