I've been flying with the Peltor Headsets Inc conversion for about 10 years. I like messing around with old tube radios, so installing the ANR in the Peltor was fun. Good instructions too. I turn it off for take offs and landings so I can hear the engine better. In flight, with the ANR on, intercom and radio communications are much better.
I just bought a new DRE6000 for the wife, it comes with the Headsets Inc ANR module. She loves it, and she's gone thru a few other brands.
I like the thin headstrap on the Peltor. I'm tall in the body, so the top of my head is usually close to the ceiling in any plane. A thin strap on top of my head is good.