DC Pro X here with active noise canceling. Very well constructed. Recommended. I'd give it a 9.5/10. The only reason I can't give it a 10 is that it shifts around on my head but that might just be the shape of my head.....

Never tried the Bose but it's the only one out there I'd use besides the DC. I had a Sennheiser and it was very good but not as well made as the DC and used batteries at a much, much faster rate. Noise canceling was good though.

I like my David Clark.