Hi Dave,
 
Question comes up from time to time. Assuming you don't want a microphone on it as you've done a lot of CW contests lately. I followed the advice of many from a previous thread somewhere and bought Sennheiser, HD-280 Pro. I hated to spend the money as not the cheapest at $100 from Amazon and the $30 bargain brands seemed attractive, but the advice was excellent. They are VERY comfortable with a rich full sound that doesn't tire me out during weekend long CW contests.
 
Glad I spent the money.
 
Kevan
N4XL