What I'd like to see is a comparison v. the Bose X. Some say it is as good, other say it isn't especially for long flight comfort.
Comfort is obviously very difficult to measure as it depends on many factors, not least of which is the pilot's head. However, we did measure noise reduction in an ANR group test back in January. I don't have the figures to hand, but from memory the bose x performed (slightly) better. I'll try to dig out a pdf and email you next week.
Ian