This may stir some comments from Sony fans, but here goes. While I have never heard a really bad Sony headphone, I also have yet to hear a Sony headphone that stands out from the crowd or moves me in some way. It feels like in trying to please everyone, they satisfy few. For this reason, I am not so excited about the new Sony MDR-1 line, nor will I hold off purchasing one or even two of the others on the list based on waiting for the Sony to come out. Of course, they may or may not be amazing and I will at least want to audition them out of curiosity when they come out.
I think the #1 and #2 vote getters are not surprising since they are not out yet and the anticipation always seems to be higher than the reality. Just ask the D400.
I would like to rank which I presently want the most based on information at hand, so this is NOT a review or impression, just the headphones I would most want to have in my hands RIGHT NOW in order.
M-100
Momentum
M4U1 (like the M4U2, don't need the amping)
D600 (owned and am thinking about repurchasing)
MDR-1
XB900
If none of these work for me, I have preapproval from the Mrs. to splurge for Ultrasone Signature DJs.