So I'm starting college the 15th and I will buy a Portable Mac. I have almost decided to go with the 12" Powerbook, but now the Buyer's Guide is telling me to wait for upgrades. Now I'm thinking no upgrades untill Paris Expo 20-24 of September. Would I be right? If this be the case is the wait worth it? I know it's college and I probably would do fine with an iBook, but I want something that would last a bit longer. Any help?