My EDC is an LCP (.380, Hornady Critical Defense), which stays in my pocket pretty much all the time now. Until recently I had a G26 (9mm) but found that it was just too bulky for long-term storage in a pocket or IWB.
However, I also keep in my vehicle either a 1911 (.45ACP 185gr Golden Saber) or a 6" revolver (.38 +P 125gr Winchester JHP), depending on my mood or whim.