I regularly carry a Citadel 3.5 CS 3 1/2" M1911.

It's a great gun with a fabulous trigger, in a caliber which I trust to get the job done.

I've also recently carried a Glock 19.

I stopped carrying my Smith 36 "no-dash" because the current threat situation doesn't lead me to believe that five rounds of .38 Special is an adequate defense for emerging threats.