I tried my HD800 with E09K + HRT MSII. It sounds too harsh...couldn't listen to it. My WA6SE came home and made night and day different on HD800.
But I still refer D7000 for vocal musics...more softer high-mid and treble with more bass punch. But HD800 kicks asses with classical musics though!
For me the speed of the hd800 is revelatory for vocals, every nuance of expression is captured.