I've searched Mroogle and Google. Most of the threads were about hard drive upgrades in Macbooks and Macbook Pro. Many reviews say the Scorpio Blue is the best, others say Seagate's 7200.4 wins. I'm on the fence between the 500GB Scorpio Blue, the 320GB Scorpio Black, and the Seagate 7200.4. I really want the fastest hard drive out there. I have considered SSD's, but in my opinion, they are not worth it at the moment. I'm wondering what hard drive did you upgrade to in your Mac Mini?