I went through these HPs:
BeyerDynamic DT800 Premium 600 ohm
Philips Fidelio L1
So--- yes the Beyerdynamic T1 and T5p headphones are the most expensive (by far...) Most headphones in the list actually sound good by themselves (When I am not doing a A/B comparison) Every time I did comparison between them, the T1 and T5p won out. I had about 5 people in my office one night and we were all listing to all of the above headphones... almost everyone had the same conclusion as me... although 1 guy liked the Denon's the best...but he is a basshead.
I was able to sell most headphones I bought to others in the office, so I am happy that overall we were able to upgrade a lot of people's HPs!
Edited to add the Philips Fidelio L1
Edited by jh7000 - 4/19/13 at 9:12am