Hi everyone, I'm thinking about getting a new iPod and I have two options. The campus computer store is currently offering the new 4G 20GB iPod for $269, as well as the older 3G 15GB iPod for $229. (The disk space is not an issue, I only have ~5GB of music anyway. The remaining space would be for backup.) The question: Is the additional 4 hours of battery life worth the extra $40 I would be paying for the new one? Other than the battery life, I don't see any other majorly compelling reasons to pick the 4G over the 3G. If anyone can think of some, please let me know. Thanks a lot!