Hey, guys. I'm going to be getting a new unibody MacBook soon (2.4 GHz with 4 GB of RAM), and one other upgrade I would like to make is to the hard drive. The stock drives are all 5400 RPM, but I'd like it to be faster, so I want to order a WD Scorpio 7200 RPM 320GB HD from newegg. Have any of you guys replaced your MacBook hard drive with a 7200 RPM drive? Maybe, specifically, the one I mentioned? Is the laptop any noisier (whirs or clicks) and does it run any hotter? Any information or drawbacks would be greatly appreciated. Thanks!