CGBP is by far the best mass builder. You may end up with the problem I have though, which is my tri's have a lot of mass, especially the upper and inner heads, but my horseshoe and outer head are lacking development. I now train with all cable and DB moves on my tricep specific days. I do chest/bis, legs, forearms/abs,delts/tris, back. SO that way on my delt and chest work I feel I get enough pressing work to hit the "mass" aspect. And when I focus on triceps I do cable pressdowns, french presses, and overhead DB extensions.