I have tried these. Sound may be great, but Noise Cancelling is not. Noticeably worse than Bose QC45. And when used on noisey public train you get random screetching/squeaking sounds generated by some kind of bug in the algorithms. Really disappointing from B&W.
I've had these in carbon version twice (now it's my second pair)
Really good sound and design, but they life lasts exactly one year, after one year right speaker breaks down Both of mine headphones did it. Each. After exactly one year