I would give the nod to the VC Azur (actually its a Demas design, VC bought Demas out a few years ago). Very strong action, and well made. You can do all sorts of customizations with the rifle. I've handled several and the level of finishing is very good for the price.

Nothing against Merkel, I've a handled and shot a couple (including ol' Curly's 500!) and they are nice guns for the money. I just think the Azur is a nicer gun. If I was in the market for another double rifle VC/Azur would be on the top of my list.