Just looking to upgrade my main PC and would like to build a music server type machine. I'm going to get an Asus board that has Serial ATA and I note that you can now get 250Gb hard drives that are Serial ATA. A few questions. 1. Why the big jump from 160Gb to 250? DO these drives run hotter or noisier than smaller ones? 2. What's the point in Serial ATA and can I use on drive with this and still have my 80Gb Seagate Barracuda running as a standard IDE second drive? I'm thinking I could get a lot of music on a 250Gb drive but are these standard drives or what?