I have a mid-2007 MacBook and I think it's time I get a bigger HDD. I was wondering if you guys and gals could help me find a reliable replacement. Right now I have a 160 GB HDD (5400RPM). I was thinking about getting a HDD that's around 320 GB or more. Preferably 500 with 7200 RPM if at all possible. What do you recommend me getting? I'd like to keep the price under US$100.00 if possible. Thanks for your help! Prof. PS - do I need an SATA drive or an ATA drive...?