I am going to need a new audio editing/ midi program to compliment my FIRST brand new PB 15 1.67 ghz that i will be ordering this week, but i need to know what the huge difference is between PRO and Express logic. i know the price is quite a bit different, and i am wondering what the advantage of going pro would be compared to going express. i am going with logic, because pro tools LE with my mbox doesn't have as good of midi capabilities as logic pro. i do a lot of midi AND audio stuff, so i need something that will be able to handle both. any suggestions? thanks so much! im very excited to become a part of the MAC world!