>>85482957Phillips Fidelio X2 (I don't know about how the X3 sounds but check some reviews).
Fostex T60RP sound very nice.
Sennhieser 600's are great but you will need a DAC/Amp to power it and not use an on board MB chip, please for my sake.
PS. I haven't bought a new set of headphones in 5 years, so I'm not updated on the newer sets.