Hi just want to give the site of my sifu sergio iadarola
www.sifusergio.com
he studied leung ting wing tsun from 1988 till 2001 so the yip man wing tjun dvds are mainly the leung ting system,he was a private student of leung ting in hong kong from 1996-2001.
after that he studied the siu lam wing tjun system in hong kong and china with sifu cheng kwong,sifu pak cheung kau,and sifu tang chung pak.
so the other dvds are mainly the siu lam wingtjun system.
the association website is www.wingtjun.com