I had a set of the flightcom denali non anr. The microphone on this thing is probably the best on the market. I even had ATC at different airports ask me what headset i was using a couple times. This is nice for your instructor, but not the number one thing about a headset.

Above all, this is not the most comfortable headset on the block. Especially with the ANR version, there is no reason to clamp it on, but these do. Ok for a short flight, but nothing above 1 hr. I'd get many others on the market before this one...X's X11's, Zulu's.