Long story short, I bought a Glock 27 through their military buy program. $389 + tax + shipping + plus FFL fee. I was out the door for $470. The Glock isn't as comfortable for my hand, but it is really easy to conceal, and again has extremely reliable function.
Think a lot about the gun you choose. Your natural tendency will be for the biggest caliber you can get. When you think of defending your family against the scum of the earth, that is a normal reaction. If that gun is too big to carry in all the ways you dress then you might find yourself without the gun when you need it.
Same issue with my S&W Sigma. It’s really accurate (long initial trigger pull but good reset), but I have to carry it in a little backpack unless I’m bundled up. Looking for either the Kel-Tec PF9 or the Taurus 709 Slim single-stack. Only 8+1, but very slim and I always carry at least one extra mag.
Colonel, USAFR