Finding used games shouldn't be a problem and, with respect to the Xbox game pricing scheme, money's not really an issue (i.e. if you convince me that there's a $40 hockey game that's really good, I'm OK with spending that $40). Neither my friends nor I know enough about the NHL today to really care about accurate rosters, career/franchise/dynasty mode, or things like that. I also don't subscribe to Xbox Live and don't plan to. I'm basically looking for a game that would be fun to play with friends. Supporting 2 players is good, 3 is better and 4 is awesome; allowing combinations of co-op (something like 4 of us humans on a team against the CPU) and head-to-head (2 on one team and 2 on the other, backed up by CPU teammates) would really be awesome.
Thanks for the help.