Hi, I consider to set up a system for multitrack recording. As an audio interface, my choise would be the focusrite saffire 10i/o. I would like to think to the future, so maybe I would get another one later using them in cascade. This way, I would have the possibility to record 16 track at a maximum of 24bit/96Khz. The question is that which MacBook can handle this? (Portability seems to be a must) Is it enough to buy the white/black MacBook (has the F400) or I would need the Pro? I read some reviews and many users suggest to use 7200rpm or + HDD and the max 4GB RAM. Any advice can help In general, what are the weak points I would have to pay attention?