I had the new QC Ultra and gave it away. The sound was mediocre at best and you can't turn NC off - a dealbreaker for me (no, passthru is not the same as off). Hope it helps someone make my mistake aa they are quite pricey.

Now if I could change the firmware to turn NC off, that would be something entirely different...

Is it auto-adjusted NC? I'm thinking of the Sony equivalents that reduce or increase the strength of the NC depending on the environment, but do not allow you to just choose the strength.