My vote is to go with Craftsman - seems to be a more practical solution. First, I doubt you'd break a Craftsman wrenching on a bike (and if you do, it has a lifetime warranty). Second, there are not that many opportunities to use ratchet and wrenches on a bike (say compared to an automobile). Threaded fasteners are not that long on a bike.

Snap-On quality is outstanding, but probably overkill for bike wrenching. The incremental difference between Craftsman and Snap-On probably doesn't merit the cost differential and increased leg growth of Snap-Ons.