I'm studying Computer Science and buying my first laptop. I see the benefit of a 12" PowerBook (so small and portable) and how great the 15" screen is. If I were to purchase a 12" PowerBook I would have a monitor to come home to and use in the apartment, but is the 12" big enough while I'm off on campus? Anyone have any experience with this? What have been your negative points? What have been the positive?