Hey all. I am currently looking into getting a new HD for my MBP. One thing I have been questioning is if I should get a 5400 or 7200 RPM drive. I know 7200 RPM can give me a performance boost (small, but noticeable) but I worry about the extra power drain said drive would cause. Has anyone here upgraded to a 7200 RPM drive in a Mid-2008 MBP and, if so, how is your battery life. Currently I am at 98-99% charge level, which lasts about 5 hours with Wifi off and 3-4 with it on. Thanks ahead of time for your input.