I'm wondering if anyone can help me, please - I am currently using an ibook G4 12" with 1G of RAM (moved over to a mac 6mths ago from windows) which works brilliantly except that I would like a larger screen area with a bit better resolution as much of my use on the computer is to do with imaging (not video though). I am torn now between upgrading to either a macbook or macbook pro but also wonder about buying a powerbook 15" from apple's refurbished website as it's size seems perfect. Any thoughts?