Lack of physical buttons is a big no-no for me. I will happily carry a micro-USB cable for that. :)
One thing this interview did not cover is how well the noice cancellation (more so isolation) works with glasses on. I love my QC35 but in a noisy environment, such as airplane, I sometimes run into a situation where the arms of my glasses worn under them opens up the seal to the side of my head and the noise leaks through. Forcing a re-seating of the headset. My Sony pair has a stronger clamping effect but it is less comfortable for long-term wearing.