I've seen a lot of people on these forums recommend the low end, why? I have a mid-2007 macbook and it is still in excellent shape. The only thing I have ever done is add 1 gb of RAM. I like to keep my notebooks for a long time, I am buying a new one for college. Ideally I would like it to last all 4 years. I will be studying computer science, I also do some developing. After education pricing, my high end mac comes out to 1400 and the lower is 1200, so isn't the .4ghz worth it? Please help!