Originally Posted by Torchy McFlux

Campy 8-speed hub bodies aren't compatible with 9 or 10-speed freehubs. Don't know about Mavic or Zipp stuff.
The amount of time, trouble and money people throw at a bike to gain an extra cog or 2 amazes me. And the narrower chains wear out faster too. I'd just stick with the 8-speed stuff if I were you. That's what I do.