I'm able to only echo that. Just one may be "improved" than the opposite depending on the conditions. Normally, the 9mm has my vote and I own far more 9mm handguns than .40S&W. My two PPCs are 9mm (Sub2000 & CX4). That said, I do such as the forty S&W a lot and just bought a Beretta APX that I really like.The polymer frame is roofed with a light-we