I am buying a Macbook Pro at the end of this month, but I can't decide which one to buy. I'm tempted to go for the 15" base model because of the screen, but wondering if I would be better off buying the 13" and using the extra cash for an external screen and an iPod touch or something. (I can't take advantage of the back to school offer unfortunately due to the bad timing of my student loan payments). Is there much real world difference between the 2.26GHz and the 2.53GHz models of the 13" MBP? I've looked at the geekbench scores and for the 12% increase in CPU speed, there's a 9.5% performance increase (but I'm guessing this takes into account the extra Ram, etc, too). However, there's a £250 price difference which seems alot for such a small increase (although, I would save £50 on ram). Any thoughts?