Just wanted to let you know that after a year of asking, Boosey & Hawkes has finally floated me a set of Steven Mead euphonium mouthpieces. I really love the SM3 and am using it. Several of my students have also glomed-on to them with great success. With each student who has tried one of the mouthpieces at this point, I (and they) notice immediate improvement in sound, ease in the lower register, and cleaner articulation. You should be selling the things for a million dollars each!