I am hoping to get some book gift certificates for Christmas to use for knitting books. Among others I want to buy Knitting Socks on 2 Circulars. What size circs should I buy? I want to start looking for needles on Ebay. I think I would be using fingering weight most of the time. I read somewhere that you should knit on smaller needles than usually called for to make a more durable sock. I know it depends on the guage but what do you sock knitters use most?