Yeah, i got my black belt when i was 12 and my 2nd dan when i was 13...I belive the only differance is that the main stance in shotokan is zenkutes and in shotokai its thuadatch ( i have no idea how to spell them both lol) I find Tang su do to be more competitive which is good and im being graded for my third belt in a few weeks....I still do both so i havnt stopped one for the other...Im looking for a chinese martial art to start as well as my other 2...What would you recomend...I would like something competitive and seeming as in the japanese martial arts they dont teach you flips, im desperate to learn them and have been practicing on my own form video tuts...Do any chinese martials teach you flips also?