I'm about to take the plunge on a new machine, and I'm wondering if the 17" SR MBP's are worth using for HD video work. I'm a student for now, but I'd really like this thing to last for a while, at least until I graduate and get some work in the industry. Display issues aside (I'll be using an external ACD), is the MBP going to have enough oomph to render HD video without crapping out in a year or so? My other option is a Mac Pro, but I'd prefer some portability if I can get it reliably. Anyone?