I bought the newer 2.5 MBP last week and I installed a 200GB 7200rpm HDD in the laptop. but I then decided to order the 2.8 MBP from Apple's site which will be here in a couple of days. my question is, will I be able to switch the 7200rpm HDD from the 2.5 to the 2.8 machine w/o having to reinstall the OS? I would think so but I wanted to ask the Mac experts in here just to make sure. what do you guys and gals think? it should be as easy as swapping the HDD from one laptop to another, right?