Bose X
I use the Bose X.
Great headset and great audio quality, but slightly bulky to carry around and the clamping effect can occasionally get a bit too much on really long sectors. The mic is brilliant though, and you can leave the intercom on with no false triggers from other noises. I've never found it an issue to have one side dislodged to speak to CC / during start-up / push-back etc, but it does kind of defeat the noise cancelling!
DW.