I recently discovered these cards and I would like to start collecting the 2008 set. I'm a little confused though because when I looked them up there are different sets. I saw sets to 315 (no SP) and SP shets of 110 and then a set to 500. I'm confused as to what the cards from 316-500 are? I'm guessing the 315 is the base set but what are the rest because I couldnt really find anything on them or I just dont know what to look for. if someone could explain that would be fantastic. Thanks very much.