I'm looking to get an interface so I can start recording. I have an iMac and Garageband and I'm looking for a good interface. I am looking at the Fast Track Pro and UX-2 because I want to have the ability to use two microphones. Also, my primary desire is to record my guitar through my amp. Has anyone used either of these products? Comments? Pros/Cons? Concerns? Alternatives? I'm just getting started with recording so don't assume I understand everything. Thanks in advance for the help.