I usually buy used if I can find them. I buy a lot from
http://www.ntxtools.com/ OTC and SK I've always had good luck with SK. I had a 1984 ford I was changing a head gasket on and broke 3-15mm Craftsman sockets I upgraded at that time with Matco and Mac impacts with a few Snap-on impacts.
Chevy and Ford are using Torx Plus and Torx Plus Tamper at this time. NTX sells just the bits if you have holders otherwise they have OTC and SK. The Pickups started in 1999.
The Elora socket is warranted and is chrome is why I suggested this one.