I'm looking for a 12" Apple iBook, and I'm wondering what speed I should get. I'm going to use it mainly for word processing and wireless internet. I already have a pretty hefty Windows notebook, and I just want something small to throw into my backpack to take to class. So obviously I dont think its worth getting a brand new one, what speed should I get? Is 500mhz enough? Is G3 enough? Should I get more speed? I can technically afford a brand new one... but I don't think its worth it for what I'm going to do with it. I just don't want it to chug on webpages and in word processing. HELP!!!