Someone asked me that old question that we all get asked, "What is your favorite gun for self defense?" At 60 years of age, and with a background that's had a "sticky situation" here and there, I generally reply, "The one that's in my hand when the trouble starts!" That is such a broad question. There a millions of answers........and most are correct. For a semi-auto, I love a .357SIG, and for wheel gun, I like a j-frame in a .32 magnum or .327 magnum or .357 magnum. I know that's a little odd, but they send heat down the pipe and and the devastation is remarkable........your authority unquestionable.