Hi thanks for the reply. I'll take a look at your suggestion.
Just liked the look of the serato inteface.
The reason it's lower latency and higher sample rates is because it doesent use USB or Firewire. It uses a proprietary firewire shape connector. (You need a special PCI card / PCIe or PCcard interface). (Expresscard not yet announced).
www.rme-audio.de
Sorry it was £420 :) I bought it for it's flexibility.
I have seen Serato in action it looks sweet....
Might check out your suggestion.