I just got my new Seagate Momentus XT, which is going into a late 2007 MBP. I got it because I'm running out of hard drive space and wanted a performance boost. My question is: should I just restore from Time Machine, or would I get a bigger performance boost with a clean install of 10.6, and reinstalling only the apps I currently use? I know back when I used XP a clean install was a big perfomance boost itself, but with a mac, is it necessary or worth the hassle? Thanks!