The MARK 23 for me is the last size on the high end of the spectrum that can be reasonably employed as a self defense, or end of the world gun. Definitely not a CCW, but I've heard it done by a few giants. There was a Gem dealer I knew through a friend that was damn near 7ft tall that carried a Desert Eagle, and one of his buddies had a MARK 23. They were just freakishly large people though.
But I've got a drop leg for my MARK 23 and it's in my "Never coming back kit" if you will. That's the pistol I can completely trust my life to in any situation and consistently score hits at ranges I would't be comfortable running any of my other pistols. I don't know if that's the placebo effect, or if it's really that good. I'm currently leaning on it's just that good. Merica.