How about this:
I've heard the T1 (but only for a few minutes!), I couldn't understand why I would want to pay all that extra money for a slightly better sounding DT880.
OTOH, it could have been the amp I was using with it, I seem to remember the amp was nothing special.
This was at a head Fi meet several months ago, so the model of the amp is lost in my memory banks!
Well, at least you guys have managed to deter me from the more expensive T1... At least for now...