I can't say anything about the wrenches but my SK roto-ratchet is my most used ratchet I have ever owned. I love the finish and build quality. I like the SK stuff but I was very let down when I found out the G-PRO wrenches were made in taiwan.
Don't wanna start a Holy War here, but I don't think the difference in quality between SK & Craftsman justifies the difference in price. SK stuff is generally a lot more. I've got both and the difference, to me, is a toss-up.