I need to decide between getting an iBook or a Powerbook. The reason I'm itnerested in the iBook is due to its incredible ruggedness. How solid is the 12" Powerbook? Can I carry it around in my schoolbag all day or will that does it to break like most shitty PC laptops? I don't absolutely need the speed of the Powerbook, but it would be nice to play Unreal 2K4 while on break.