About the dt990 by the way guys, mine was a 32 ohms version. Those are supposedly the most offensive dt990 version. I definitely liked the 250 ohm dt880 much more than the 32 ohm dt990. The dt880s had much better bass and more tolerable highs. The mids are still a little recessed to me on the 880s but the 990s were too much on the V-shaped side of things to me. At the end of the day, the 880s are listenable cans while the 990-32s gave me tinnitus within a few seconds of music listening. Talk about the sibilance region being exaggerated, those cans are the worst offenders in the history of headphones.
Me thinks you haven't tried Grado PS1000 or Ultrasone PRO900.