Getting ready to pull the trigger on a new 13" macbook pro. I'm a college student getting ready to graduate so right now it'll mostly be used for music/movies, surfing, email, and microsoft office but who knows after I graduate. I plan on using it for quite a few years so my question is, would it be better to buy the 2.4ghz processor with 8gb of ram or the 2.66ghz processor with 4gb of ram? The 2.66 with 8gb is a little outta my price range.