Beretta PX4 Storm. Silky smooth Italian-made engineering sending 180-grain deterrents to home invaders!
Before I ever had my own, though, I had my pick of about a dozen weapons ranging from Grandpa's M1 Carbine and Dad's Colt Cobra .38. I knew where all the guns were and was trained on their use.
Add three large dogs to that, and woe to the burglar who chooses our house.