Just like half the people on this forum, or so it seems, I am desprately waiting on the MacBook Pro refresh. I plan on buying my first MBP, a major upgrade from my grandma's iBook G4 I am currently using. I had a question about hard drive speed. I know that 7200RPM is quite a bit faster than 5400RPM, but what about battery life. I need it to get me through a day of school, 4-8 hours. My question to you is: would it be worth the extra $50 or so to upgrade to a 7200RPM HD, and what would the effects on battery life be? In your own experiences with current MBPs. I've thought about going with a SSD, but that might end up being too much, since I'm already paying quite a bit. Thanks!