I currently own a 15 inch Powerbook G4. Once Core 2 duo is released I plan on upgrading. I was wondering what you think is a better option? If money was no object, would you buy a 15 inch or the 17 inch? I travel frequently and I was wondering if the 17 inch is more difficult to travel with or if the difference between it and the 15 is neligable. Is there a difference in performance between the two? How is the battery life on the 17 inch?