wrist strain in non-existent
you can swipe back and forth through web pages and windows
mimics iphone user features like pinch, zoom, rotate and more
with the current os, track pad is much more fitting with available gesture commands
large swipe area
etc etc etc
a lot of reviews i read said that while the track pad trumps all, the mouse is good to have on standby. a lot of people preferred it for photo and movie editing and while probably not as extensively as these people, i have done both and haven't felt handicapped capability wise, while editing.
which one do you use for you imac?