I just ordered the Denon AH-D2000 over at
www.headphone.com. They recommended them to me because my receiver can drive them easily, they said that the sound on Denons are comparable to the Sennheiser HD650 and superior to my HD595s, but the bass is better on the Denons (important to me), I don't have a desire to add a headphone amp as of yet, and they said that the D2000s are very comfortable to wear (very important to me). Now I will be ebaying HD595s.