If I had the money and the time to hunt one down, I would love to have an original 1911 made by Union Switch and Signal. Aren't they the rarest of the wartime 1911's?
I once owned an M1 carbine made by IBM. I bought it as a novelty because I once worked at the IBM plant in Lexington. I wish I hadn't stupidly sold it-- no telling how much more it would be worth today.
I wonder if the Browning marked guns are worth less or more then their SIG equivalent ? Regardless, I agree with you: it's hard to find a better shooter in a production gun (although I suspect your Les Baer would beat it).