I watch this thread with baited breath.
I have used the BOSE, didn't like the fit. Ended up with a Telex Stratus 50D, absolutely brilliant, except the ear cups are splitting again, seems you only get about 50 hours use out of them. I am off to the US next week, so hoping I can get to a decent pilot store and trial some others. I would be interested to hear any comments on the Lightspeed Zulu headsets.