Hi I have trained my horse from the ground up, by myself, using a variety of useful techniques learned from Roy Yates, Clinton Anderson, and Julie Goodnight( my favorite). We have solid leg yields, he gives his eye, frames up nicely, and is very responsive in nothing but a Clinton Anderson style training halter. We are ready for the next step, which includes going for a more verticle headset (think reining headset). Any ideas as to the right bit to start with? He is broke to a bit, as in we work on flexion and giving at a lunge with an english d-ring snaffle with sidereins and a surcingle. A Myler 3 ring combination bit was recommended to me. What do you all think?