Have no experience with Thunderbolt mouthpieces, but La Voz reeds are good if the tone is too thin. Rigotti Gold is another option but they can be difficult to find.Hi, I recently got a thunderbolt mouthpiece for my alto. I've had trouble choosing a reed that suits the mouthpiece - the tone is very thin. Has anyone had success with this mouthpiece? If so - might you have any advise on reeds? Thanks!