DC's, for certain. Until I get back to jets, then a nice light pair of Telex...
My H10-13.4's have survived my time as a student, instructor, and two 121 turboprop jobs. All told, over 7 years and over 2500 hours of use. Never once had a problem with them, either. I recently got the microphone wet while flying, (like drenched) and it stopped working for that flight. I feared I had shorted it out, but sure enough, after some time to try, it continues to work. Also, their customer service if you do have a problem is second to none. (Probably because they want all of us on boards like this to talk up their products...well, it works!)
Spend the extra cash and get a good headseat. It is worth it.