Basically what the title says. I want to be able to record keyboard guitar and bass all at once and i haven't found a "cheap" interface that can fulfill that. I was looking at the M-audio Fast Track Pro and the PreSonus Firebox but they only have 2 instrument inputs. I would prefer that the interfaces be compatible with both Windows XP SP2 and Mac OS Leopard. But just Windows is fine. Also I've had issues with Lexicon gear so i'd rather stay away from them. Thanks.