I'm able to only echo that. One particular might be "much better" than the opposite according to the criteria. Frequently, the 9mm has my vote and I own much more 9mm handguns than .40S&W. My two PPCs will also be 9mm (Sub2000 & CX4). That said, I do like the 40 S&W a great deal and just acquired a Beretta APX that I actually like.During our demand