I apologize for moving this thread O/T.

To answer the OP's question given the guns he listed my choice would be a quality British boxlock, preferably a heavier one with 2 3/4 in chambers & 3 1/4 ton 1 1/4 oz proof. Something like a like pigeon gun or a waterfowl gun.

For myself I am currently shooting a Perazzi DC 12 for a SxS clays gun & so far it has been trouble free. Prior to the DC 12 for SxS clays I mostly shot a CSMC 21, a Parker Reproduction Steel Shot Special & a Parker Reproduction Sporting Clays Special in that order. For what it is worth I had ejector issues w/the Parker Repro Sporting Special & I had to have the joint pin replaced on the CSMC 21.