hey guys, Im a music producer on my spare time. I already own a mac mini and a macbook pro. I use logic express 9 on macbook pro and logic 8 on mac mini. I have a ton of virtual instruments I use and it seems to choke up my systems. Thinking of upgrading to a mac pro refurbished. One of my photographer buddies swears by the new mac mini for his photo studio. What would you guys suggest. I was thinking of staying portable with macbook air or new macbook pro..