I am able to only echo that. One could be "greater" than the opposite according to the conditions. Typically, the 9mm has my vote And that i individual a lot more 9mm handguns than .40S&W. My two PPCs also are 9mm (Sub2000 & CX4). Having said that, I do similar to the 40 S&W lots and just acquired a Beretta APX that I actually like.The polymer body