I've used the Telex 750, Plantronics w/ custom ear mold, and the Sennies 25 in the CRJ. At high cruise altitude either one is fine and just a matter of comfort. It's at the lower altitudes at high indicated airspeed that the cockpit gets noisy from wind noise if you are using the 750s or ear bud. Of the three headsets, i'm using the Sennies right now because they are the quietest. The downside is that they can get uncomfortable after a long day with a few long legs, and they can still give you headset head, though not as bad as DCs. I usually take the headset off above FL180 on flights longer than an hour to hour and a half and it works out great. Every once in a while i'll mix it up and use my 750s or the ear bud for a trip though.
I recommend the Sennheiser 25 for the CRJ as they work very well and make the cockpit very quiet and are still effective without the ANR in case the batteries die in the middle of a flight. If you do deciede to get them, get on the ALPA site and use their discount. It's not a huge discount, but you can take up to a year to pay them off with 0% financing.
I recommend the Sennheiser 25 for the CRJ as they work very well and make the cockpit very quiet and are still effective without the ANR in case the batteries die in the middle of a flight. If you do deciede to get them, get on the ALPA site and use their discount. It's not a huge discount, but you can take up to a year to pay them off with 0% financing.