hi, I'm going into a design school to study either media or industrial design. Now that the 17" mac book pro is out as well, i don't really know which one to pick. I really like the double layer burning, the 3 USBs, and the screen, but is the 17" just too big? Is it even portable? that is the thing I need to know. I don't think I will bring it to school everyday, but I know that I might need to carry it around sometime. Could the people that have had or still have the powerbook 17" comment on it's portability? Thank you so much!