Good responses above, thanks everyone.
I do have to echo what Ed and Al stated regarding the Protocraft couplers. It’s kind of funny now, but I had dinner with Jim Kehrein (Monarch Owner) during the O Scale meet, super nice guy. I had his unpainted dummy couplers in my hand, and I thought they seemed a little big. I just figured they looked larger due to not being painted.
In any case, the dummy couplers looked fine, but the Protocraft was just a bit closer to what I wanted.
Good luck with your choice Mike.
Charlie