I have a UFlyMike. Only headset I've ever owned that I could hear and understand all transmissions.They claim it's FAA approved (that's why you must ship them a QC15 to bench test with the attachments). I figure if I can't stand the answer, don't ask the question.

Side benefit is having it for DH/nonrev entertainment. Single battery lasts a long time. Only downside is mic doesn't swing out of the way, and only mounts on the left side.