Yes, many HD800's. There was a Beyer T1 but I missed that.
Properly amped, the HD800 was REALLY nice. It's different sound than what I'm used to with my Grado HF2's. I did hear a difference between the HD600 and 650's, though not enough for me to justify the cost upgrade. However, listening to AKG1000's electrostats, now that's another story. Given the funds, I might buy that.