I have always owned craftsman. Sears backs their stuff, you can find parts, they are high quality and not too terribly expensive.
Just make sure you get something that locks, and has ball bearings.
+1 I would have to agree. I have always had craftsmen. Craftsmen professional series is good stuff. Snap-on makes great stuff too, if money isn't an issue. Personally I would want to spend that extra cash on gun stuff.