Hey GF Got some news for you, Choi Kwang Do was originally developed by Grand Master Choi. Its was ONLY for Black belt Tai Kwang Do Martial sArtists, Then he relised it wasent working so he let it out for everyone to learn, theres nothing wrong with it but Choi is a More up to date martial art, Its a LOT less strain on the arms, where as in Tai Kwang Do, You lock out the elbows when doing a Punch, and in Choi its a lot more Fluid, in Choi you finish off where you started, so we follow through our punch, in Tai you stop after the punch then follow straight after with a punch, Its a VERY old Martial arts, very Traditional. Choi isnt very old. Grand Master Choi was a third Den in Tai i think. He developed it after reliising it was bad for your arms.
My Choi Dojo keeper told me.
G-S