Hey guys, first post. After all these years using Windows, I've decided to buy the new macbook pro that just came out on the 8th. I am getting the 15" one with the 2.66Ghz processor and the dual video card configuration. Now, I'm debating if I should spend the extra 60 bucks on the 320Gb hard drive and get the 7200rpm hard drive instead of the 5400. I will be using it mostly for school for things such as creating/running programs (computer science course), watching movies, using Word, Powerpoint and excel and just the casual internet browsing. Will there be a huge difference in the noise and heat the faster one produces? I really don't want to regret not upgrading the hard drive with such a powerful laptop. Thanks for the suggestions!