Firewire Trumps USB2 (Score 2, Informative)

IMHO, firewire is still the best for external disk storage, especially if you're using it for activities such as virtual machine images. Here's an article I authored when I was benchmarking Firewire against USB2 performance: http://www.joeburnett.net/2008/01/30/firewire-vs-usb2-performance-for-external-disk-storage/