Never really thought about a "mountain" gun particularily. However, I sold all of my big "N's" some time ago and missed them. I can't handle the big magnums anymore, age and arthritis have taken their toll. But I really wanted a large caliber "N" again.
So, I'd been on the prowl for quite a while. Watching Gunbroker, no luck. The few that I bid on (44 special and 45 colt) went for way to much for used guns. Same thing on Auction Arms. The other day I was in one of my local gun shops and they had two mountain guns in the case. Both were 45 Colt, stainless and blued. I've always liked blued guns, and the blued one had some real nice wood stocks on it. The stainless had the ubiquitous Hogues. Well, I bought the blued.
The fact that it was a "mountain gun" didn't even factor in. I simply liked the look, the feel, the balance, and the fact that it was large caliber "N", which was what I was looking for. The trigger was "heaven".
So, I guess you could say that my favorite Mountain Gun is a 45 Colt, since that's the only one that I have.
Take Care, God Bless, And WATCH Your Back!