Glock 27 with Pierce +1 magazine ext, IWB. Not always very comfortable, but that's the price you pay for feeling secure. When that isn't practical, Seecamp 32ACP in the pocket, not much for stopping power but better then a rock (well maybe not).
I've Found On the Few Times I've
Felt The Need to Conceal Carry,
That You Cant Go Wrong With a Walther 380.
It's Small enough To Be Comfortable Almost Anywhere;
Ankle, I Would Assume Shoulder Holster, Hip, Small of Your Back for Sure...
SW40E in Bianchi 105 Beltslide. It's comfortable enough for me so far. the retention strap works adequately. I'm thinking of going S&W model 638/442 or even one of the Scandiums. They're expensive, but light as a roll of toilet paper!