I am a big believer in that if you are going to keep a handicap, to use one of the USGA ones. I do not use ESC, I just input every single round I play and they can be seen on the GHIN website. As for ESC, while in some ways its correct, I always just let the GHIN handle everything I throw at it. I play the regular scores and turn in a real scorecard. Just my 2 cents.