When I have enough garmentry to conceal it well, probably my SR9c Ruger. (And, therefore, my SR40c, as well.) But I often dress more lightly in warmer seasons, and when I do, I'd really rather carry IWB. In that case, the gun I carry most often is my Kel Tec P11. It's extra long trigger makes negl. discharge (which could be more catastrophic with IWB carry than belt holster carry) far less likely.
My new Taurus PT 111g2 promises to be a lighter and more versatile holster carry than the Rugers, and I may buy a Taurus PT 709, which will be even more so. Could make belt holster carry seem like a better option. The most pleasant carry, though, is the Ruger LCP. Always in the pocket with that one.
I love snubbies, and have several, but really just don't carry them anymore.