I'm not sure what you're judging as "quality", but for me, quality means durability.
Over the years, I've seen more Craftsman sockets crack/break than I can count (literally), and I think I've seen maybe one SK socket break, and one SK bit socket, the bit snapped (which is considered a consumable anyways).
I guess our views are so polar opposite that we just won't be able to agree on this one... but saying that the SK master sets aren't a good value, almost borders on insanity from my point of view. Obviously it is reality from yours.
Please don't think I mean offense with my post, it's just the only way I can reconcile two so vastly differing points of view while still trying to stay out of an argument.