So I bought the QC15 at best buy for $330 w/ tax and traded a flight lesson with one of my students for his Uflymic (for whatever reason he prefers DC's). I could not believe what I had been missing out on all these years. I was just blown away. The noise reduction in my opinion is better than the A20's. In fact today I wore them in an aircraft that comes with A20's and I unplugged them in order to use my QC15's because they were quieter and lighter/more comfley. And this for half price.

I will say there was some trial and error getting the sensitivity and gain correct for the mic and the sidetone on the radio is a little weak with different radios but all in all so crystal clear and quiet and above all else quiet.