I preferred the T1s
Before picking up the T1s, I did manage to audition the HD800s 3 separate times. The final time was for about 30 minutes with my own tube amp at a very customer friendly HiFi store.
I thought the HD800 was indeed a very impressive headphone with incredible sound staging capabilities, each time I would listen to it, that high impression seemed to lessen. I think that these are impressive headphones, but I do listen to a lot of rock and I found them somewhat lacking with this genre.
The T1s for me are a very special headphone and I have written a couple mini reviews on the T1 thread if you're interested. They have continually impressed me with regards to what ever music I've thrown at them and continue to be incredibly clear and neutral (although on the warm side of neutral) without being overly clinical.
I am looking forward to others' impressions as the T1s begin to ship out to customers!
