I used to keep up on all of this stuff but am not familar with the new loads for defense. What is the best rated load for the 9MM, and 40 S&W?

I am trying to taper back a bit on my guns as I am sort of burned out on reloading for 12-16 calibers like I do now. I am considering trading my 9MM and 45 for a 40 S&W. I know that the 40 has really caught on with law enforcement and I wondered what loads are best for defense.