I have the .40, test fired in October, have run 450 plus rounds through it with no problems. It handles the .40 s&w very well in my opinion. Very controllable, and fun to shoot. More power with the same ability to conceal as the 9. Also you'll soon hear no less then ten posts as to the ability to drop in a 9mm barrel for cheaper practice. I like the .40 because that's what was available, but if I had a choice, I'd still get the .40.