I am looking to get something to help my recording situation here. I am loving garageband. Very cool. The new mbox came out and I am considering this as an option. I need to record vocals and live guitars and the little 1/8 does not cut it. I need some kind of I/O box. I want to spend about $500 to upgrade my system. I could get the new mbox or maybe icontrol logic m-audio fast track What should I do? I am a student so I get the cheap versions of logic. I really just want to use midi and be able to record good vocals and acoustic guitar. What do I need???