Back when I first started, back in the early 1980s, I most often carried pocket guns. As IWB holsters got better, I gradually transitioned in the 1990s to full sized sidearms, only occasionally going for compact compromise guns like J-Frames, Detective Specials, and the like. In the last few years, it's been only service sized. The one I'm currently settled on is the Glock Model 17, which has been my daily carry since last August. For a few years before that, it was a 3" K-Frame S&W.

I switched to the 17 mainly due to a growing awareness of the potential for the need for more capacity than a wheel gun provides.

There's just no comparison in shootability between a full sized service gun and a compact or pocket sized weapon. Like night and day, and since (with the right holster and belt) they can be carried and concealed just about as well, I can't find too many reasons (in most cases) for carrying anything smaller.