Okay, I changed my answer since a few months ago. Lately, a G27 most of the time; a G30 now and then ...so it doesn't feel forgotten. Someday I might try the G30 on my belt and the G27 on my ankle ...with a spare mag for each!
Diamondback DB380 when nothing else will fit. Ruger sr9c for most occasions EDC concealed, Custom Glock 20sf 10mm for hiking and hunting then put the .40 s&w bar-sto barrel in it for nightstand duty.
A micro single stacked 9mm will be falling in here somewhere later this year when they all hit the market.
Lately, I've gone back to my Makarov for a variety of reasons. My S&W 915 has the most carry-time. My Glock 23 rarely - I'm just not that comfortable with 1 in the chamber and no external positive safety. My grandfather's .38 Special even more rarely.
I'd love to carry the Kimber, but the custom trigger just screams lawsuit in the unfortunate event that it would become unholstered for defensive purposes.