I consider the 40 S&W a 9x19 Plus. The bullet diameter has been increased from 9 mm to 10 mm. Nothing to get excited about.

I shoot 9x19 in practice and competition for its economic ammo availability, no need to reload.

I shoot 45 ACP in competition because of Major scoring and the challenge.

I do not shoot 40 S&W, because it is just a 9x19 with a bigger ego.