I'm getting a 2,4ghz mbp. I want a 7200 rpm hd. Do you think I should buy the HD myself and put it in? How much trouble is there to change the hd? Is it like 1 screw? To go from 5400 rpm to 7200 rpm 250gb on applestore cost about 50(usd) in Sweden. For that I can almost buy a decent 7200 rpm. Is it worth applestores price?