I've seen Brno and Merkel O/U online. In particular I see that Merkel makes or made a sidelock O/U. I like the O/U in a shotgun versus a SxS. I'm considering a .375 H&H.

Can anyone comment on O/U performance, safety and resale issues versus a SxS. Other things a DR newbie should know regarding an O/U?

Thanks.