I think I have tried them all...and at the end of the day, for me it's not so much about about trying to quiet down a loud cockpit, but simply getting it so quiet that the communications are clear and concise and I can start catching vibrations, issues, ect. Caught a number one bearing failure wearing the Bose X, that I don't know if I would have picked up with another headset. In a GIV, Citations, and Turboprops it's my choice.