Just to add to all the notes about the differences between the pb 12″ and ibook 12″ – the killer difference for me was the fact that the iBook’s video out only runs at the native lcd resolution (1024×768, I think), and the powerbook can run up to 1600×1200+ externally. I want to be able to hook up a 20″+ monitor and get some real work done with a high-res desktop.