Telex 850 in CRJ
I use a Telex 850 in the CRJ200. I really like it. I nearly wore out the ANR power switch the first month, marveling at the difference. When worn without ear plugs, it is like sitting in a quiet room. With ear plugs, it is like sitting in a really, really quiet room.
Very light weight, and no batteries required. Power comes off ship's power through the mike/speaker plugs. ANR is on unless you switch it off.
I bought mine through Ebay for $419.