The two places the DC’s might fall a little short compared to the A20s is the microphone and the weight

better active noise reduction- DC is slightly better passive noise

Although I'm also impressed with the Bose A20 (I don't own them, but a fellow pilot friend has them in a plane I use), the DC's are almost 30% less expensive, and I know I don't have to worry about customer service with David Clark

Bought based on DC's reputation, reviews of the One-X, and that they are made in the USA.

Should the batteries die the DC’s are very usable with their passive noise reduction which is much more than what the Bose A20s can offer

better active noise reduction- DC is slightly better passive noise

Luckily DC has a 30 day money back guarantee

The DC's seem quite a bit more compact than other headsets, which is also appreciated

With that behind me, my first impressions are that the DC's are excellent in terms of build quality

These DC are simply amazing, the quality of the product, the way it fits on your head is perfect