I would suggest the smaller dome for the simple reason that its easier to maneuver while in and through the cage bars. The only issue is that with a smaller dome the strobes have to be closer together than the wider dome. BUT i guess you will be taking pictures sans the strobes and manually white balance. So go with the smaller one. I have not seen a herculean difference in images with both except that the smaller dome is better for CFWA pics.
Cheers,
Diggy
