I would go with the Mac over either one of those. Nothing wrong with Craftsman, but they are more function than anything. Snap-on is nice but cost 3 times more than the same exact box in a Mac. I went through this years ago and ended up with a Mac with ball-bearing slides and all the bells and whistles for much less $$$$. Besides I was already giving the Snap-on guy enough tool money, didn't need to add to it.
Jordy