I like the bully bull grunt tube; and also use the 105 (yellow) and 100 (blue-flat top) diaphragms. The tube gets LOUD! Do not like the sound from the conquerer mouthpiece, though, just doesn't sound good to me. Thats just opinion. The bugling bull reeds break in nice, sound good, but I have had issues with durability. That said, they are just diaphragm calls, and easy to replace.