I am trying to decide between an iBook and a PowerBook. I'm not a professional user, but do like to dabble in programming and basic photo editing. I also will use this laptop while travelling (including plane trips) and at home in a wireless network. I would think an iBook would suit me just fine, especially with the G4 chip, but I do not want to be limited in the future. Also, for the iBook, is there a major difference in performance between the 800 MHz 12" and either 14" (either one) that I should consider for my uses?