I can only echo that. 1 might be "much better" than the other depending upon the conditions. Usually, the 9mm has my vote And that i have extra 9mm handguns than .40S&W. My two PPCs also are 9mm (Sub2000 & CX4). Having said that, I do such as the 40 S&W a great deal and just acquired a Beretta APX that I really like.I just keep several thousand ext