Bose X headsets
I have Bose X headsets in the front seats of my Mooney Ovation 2GX - much better than anything else I have flown with both in terms of auditory clarity and comfort on long trips.
A really cool feature of the G1000 glass cockpit is the "play" button on the audio panel which permits replay of all broadcasts - very good if you are routed by an unexpected waypoint pronounced in peegeon Eengleesh.
My R44 has normal peltor headsets which do a pretty reasonable job of keeping the noise out by apparently clamping very hard to your head. It can take several hours for the Peltor induced pointy-headedness to resolve - the headset-hair quiff is incurable.
SB