After doing a bunch of research, it seems like for a beginner wanting to learn an electric guitar via GarageBand, the Lexicon Alpha or M-Audio Fast Track are decent enough interfaces to buy. However, I did see another interface, cheaper on Amazon than the other two, that seemed to get good, but limited reviews. The Tascam US-100. I did not see many threads on this forum regarding this interface. Is the Tascam US-100 comparable in quality to the Lexicon Alpha and M-Audio Fast Track, knowing I don't need anything fancy. By the way, to learn the electric guitar on GarageBand, I don't need to buy a microphone for the interface, right? Just the audio interface and my electric guitar is all I really need, correct? (obviously assuming I just don't want to plug the guitar in directly to the iMac using a 1/4" - 1/8" cable -- which I read was just not very good at all).