Kahr K-40 in a Galco "tuckable" IWB at 4:30 ish.
Works great for me.
But it depends alot on.
Your body Type.
What you do, ie. how active are you, do you spend alot of time in a vehicle, running around etc.
How do you plan on concealing? Shoulder Holster, Pocket carry, IWB, OWB SOB, Crosss Draw
How strict are the limitations on carry in you respective state/ work place.
Here is a little quiz.
Your at work you bend over, showing a recognizable portion of your firearm.
What happens next-
A. You Blush abit and re-conceal. The people around you laugh and regale you with a story about "the not so good ol days when their brand new Colt Mustang fell out while they were bent over picking up eggs at the grocery store".
B. People look at you kinda funny, some nod knowingly, Susan the (often ignored) UMASS grad talks about you at the water cooler with her one or two other moonbat friends.
C. People drop everything, scream and run like crazed howler monkeys, SWAT team repells down the wall and shoots you (because only cops and criminals have guns). Susan (The executive director of manpower) and her two best friends sue the company you work for and/or the manufacture of you chosen arm for mental anguish (and win). On call violence councelors arive and teach the "victims of gun violence" that it's the fault of the NRA, for supporting racist criminals, and shooting cute little bunny rabbits.
Sorry I got a little wordy on the last part.
Hopefully this helps a bit.