Ok there is a little more to this. Today I placed an order for the baseline 2.4GHz model but configured it with a HR display and a 500GB 7200rpm hdd. My dilemma is that just a little while ago, I started looking around and realized I could get a 2.53GHz model configured exactly the same except with a 5400rpm hdd for just $13 more. Should I cancel my order and change it to the 2.53GHz model? I'm also a little nervous about the 7200rpm hdd as some people have been saying that the hdd's that apple uses aren't that great and can get hot and loud. So I would really appreciate any input.