I have a Arca/Swiss B-1 Ballhead and the comparable Kirk Ballhead. I love both of these ballheads and use them as platforms for eveything from my G2 Contax though my Bolex Rex 5 with Norton Animation Motor (the 8x10 Wehman is a lightweight compared to the Bolex).

You can see a couple of pictures in my APUG Gallery of my Arca/Swiss ballhead supporting my Wehman 8x10 view camera.