Flash Bracket and Clamp Recommendation?

I want to mount a flash bracket on a clamp on a leg of my tripod.

I'm looking for recommendations for:

1) the clamp - Bogen Super Clamp? Slik Clamp Head? Something else?

2) the flash bracket - something that can hold a Sigma EF-500 (which is
a somewhat large flash unit), has maybe 2-3 articulations for
flexibility, and perhaps allows the flash to be flipped horizontal or
vertical. Otherwise, not too elaborate.

Would I need any other components for such a setup?

Peter

--
If replying by email, be sure to remove KILL SPAM from return address.