I found this set on sale from Northern Tool, and ordered it. Has 3/8 and 1/2" drive sets in SAE and metric. Seems to have a little wider range of sizes and about the best price I could find.
No lifetime warranty, but great price, and like you guys said, not likely to break one.
http://www.northerntool.com/shop/too...ct_13564_13564
JP