I have a dilemma. I am buying a MBP. I have contacts so can get it a lot cheaper than the regular price. At first I was going to go for the 2.4GHz because it was cheaper. I just found out that I can get the 2.53GHz for only 100 bucks more... Should I go for the 2.53GHz? Is it a lot faster than the 2.4GHz? For only 100 bucks more, is it worth it to go for 2.53GHz??