Okay so I don't even own an electric guitar yer but I'm planning on it very very soon. The main purpose of getting the electric guitar is for using with Garageband. I don't anticipate any "live" performances or anything where I need the sound to go further than my headphones. Sooooo... what should I get? I've been look at the M-Audio Fast Track USB for a bit but then I came across the M-Audio MobilePre USB. To be honest, I don't know what the difference between them is except price. My hope is to connect guitar to one of these devices (or a similar one if you can recommend it) and then into my iBook with USB. Don't worry about the computer being too slow or whatever because I might be upgrading that too. I'm more interested in the go between from the guitar to the Mac. Thanks!