I'm just about to buy an Apple Laptop, and this will be my first Apple computer. I'm going to be a freshman in college, majoring in biology and I'm trying to decide between the powerbook and the iBook. I'll need wifi and bluetooth, and a larger hard drive, but I don't plan on doing any video editing. However, I want this computer to last at least 2 or 3 years, before I have to buy another desktop or laptop. Will the extra $200 in the powerbook be worth it in the long run?