I bought a used isg cap from a fellow who had a ys 120 in it. I think it was the fz model as well but not sure. He switched it out for a moki 180 because the 120 just didn't have enough for serious 3-D! Love my edge is right the goldberg ultimate is a ball of fire with a ys 120 in it, as is his with the saito 180! The world models 120 size extra 300 is a great plane but not a good 3-d platform. But a 120 will fly the crap out of them!