I'd say whatever headset you have at the moment. I'm still using the DC's I've had since I started flight training. I'm getting a little sick of the vice grip, but most of our flights aren't long enough to make it an issue. I have seen a lot of people using the Telex 750's, but I still think it's a bit too loud for those. Especially when you're using go home power on the last day. I have heard some good reviews about the Telex 850's though, which are only $399 here: Telex 850 Headset. To my underrstanding, that's really cheap for an ANR headset. Especially one that's powered off the headset jack itself so you don't have to worry about the battery pack.