I hate this site. In the last month I have bought, begged, borrowed or stolen :-
PSB M4U2 (returning due to a slight channel imbalance)
Sony MDR 1RNC
Sennheiser Amperior (which I'm selling here in London BTW)
Also on my to-try list are the Momentums and Sony MDR 1RBT (I really liked the NC Sonys, but not the NC mode).
And now, thanks to this damn thread, I may buy a pair of UE 9000s tomorrow (Although I'm confused by the great/rubbish alternating reviews!). I spoke to the Apple Store Regent Street, and they say I can return them within 14 days if I don't like them, so may as well give them a try.
I'm slightly concerned about all the talk of huge bass, and they seem quite hard to drive on an iPhone but I guess I'll see. I think I want a slightly warmer phone than the PSB (which I love though, and may still get a replacement pair). The Sony's were almost there for me, but the NC mode blew it, hence the possibility of the BT model.
Don't forget about the V-Moda M-100, Yamaha PRO 500, AKG Tiesto K267, and upcoming NAD HP50