According to the Zildjian website, its Mike Alba, Ernie Severino, and Vic Mercado.
According to JB, it's Mike Alba, Ernie Severino, Vic Mercado, Jun Regalado, Mar Dizon, Mark Escueta, Dindin Moreno
Other past(?) endorsers... Paco Arespacochaga, Wolf Gemora, Benjie Mendez....