Bose X for a CRJ? Two words: Over kill. Try a Telex 850. The ANR on the Bose (or any ANR headset for that matter) is most effective canceling noise at lower frequencies (ie. the drone of a prop). The noise in the front of a CRJ is predominately wind noise which is a much higher frequency. I see guys wearing the Bose in CRJs sometimes, but personally, I think it's a big waste of money.