yesterday i was at a couple bike shops with my dad to get a chain for my bros bike. while we were there, i looked at some mountain bikes, and the ones that were in my price range were the giant stp (i thinks its the stp 2 , the one w/o discs, so i'd have to add those i guess), gary fisher mullet, haro 8.1. i was wondering if anybody has any input on if any of these are decent bikes and opinions about them? or should i just look around for a used bike?