sorry for my late reply -- quite busy the last weeks.
I'm trying to organize another meet in Vienna where I could bring along my T1 (possibly on March, 15th). But you're welcome to PM me to meet at (almost ;) any time.
The facelift version does to my knowledge change nothing regarding sound signature. It uses the larger pads which I purchased for my DT1350 as standard though, so it might be a bit more comfortable straight out of the box.
Still waiting for my T51p though... March I guess.