I'm ordering a system, and have a choice of 3 hard drives...

1) Hitachi 120 GB Ultra 100 IDE 7200 rpm 8MB Cache

2) Western Digital 250 GB ATA100 IDE 7200 rpm 8MB cache

3) Seagate 80 GB SATA ST380013AS

I DON'T care about size. Which is fastest? Which is best? Why?

Thanks