Hello, I am in need of a new internal hard drive for my ASUS X58L. My current setup is an internal Hitachi Travelstar 5K250 HTS542512K9SA00 and an external Seagate Barracuda 7200.12 500418 ST3500418AS. I have narrowed my choice down to five drives, but I'm not very experienced with hard drives and would like some input as to which would be the best option. Western Digital Scorpio Black WD3200BPKT - 320 GB, 7200 rpm, 16 MB cache, £32.00 Western Digital Scorpio Black WD5000BPKT - 500 GB, 7200 rpm, 16 MB cache, £42.00 Seagate Momentus 7200.4 ST9320423AS - 320 GB, 7200 rpm, 16 MB cache, £32.00 Seagate Momentus 7200.4 ST9500423AS (ST9500420AS?) - 500 GB, 7200 rpm, 16 MB cache, £42.00 Seagate Momentus Thin ST320LT007- 320 GB, 7200 rpm, 16 MB cache, £32.00 Basing your input on value/performance for money would be most appreciated, as I understand that both manufacturers are pretty decent. Thank you! Dylan.