I use the headsets that came with the CT. They are not ANR but do not need to be, no I didn't try Ian's units. Can't remember the make of mine and am away at the moment so cannot check. I also have DC 13.4's Peltor's and a Bose ANR to play with but don't bother because there is no need. The CT is a bit like a fridge. It is white. Open the door the light comes on. If you are cold select more heat, if you are hot select more cool. It just quietly does it's job so no need to change anything just add fuel and service.