Just sold my HD600s after hearing a friend's T1s. Loved them in so many ways. I also much preferred a mate's LCD-2s but couldn't live with the ergos.
Is now a smart to buy a new set of T1s though? With the new Hifi man stuff coming out amongst others, just not sure if the Beyers are going to be old news soon. Are Beyer working on a replacement anytime soon I wonder?
I'm tending towards just getting some as I like the sound and that's the main thing, just don't want to regret the purchase in a few months!