Answering this poll makes me realize that what I intend and what I do are different. I intend for my Kahr P9, 9mm, to be my primary carry gun but I most often find myself carrying a S&W 637, 38 special. The small size and light weight of the Airweight snubbie are just too seductive. Of course, if the time came that I needed it, I would prefer a heavier caliber, say .357 or .45. Actually, if we're just preferring and don't have to carry or conceal it, I would prefer a 12ga!