I'm a college student who plans on immersing himself in graphic work (mostly in Photoshop and Illustrator) for the next few semesters. Hopefully at some point I'll make it into the graphic design program at Savannah College of Art and Design. That said, I currently own a 20" iMac Core Duo. I often visit home which makes it a pain to lug my iMac to and fro, and am looking to sell it and replace it with a laptop. Here's my choices, then. 1) 15" MacBook Pro - Nice and portable, but will the screen resolution be big enough for graphics work? What do you guys think? 2) 17" MacBook Pro - This would be the ideal choice, ultimately, but its fairly expensive. If I could get away with using a 15" MacBook Pro, I would. Again, would 1440x900 suffice for Photoshop work? I'd be working primarily with 300dpi files. 3) MacBook w/ 23" Cinema Display - I'm worried about this idea. While I have ultimate portability as well as a sweet screen to use when I need it, I'm worried that the MacBook's underpowered video performance will come back to bite me. What are your thoughts?