I'm very impressed with some orchestral pieces with this setup. Currently listening to the Skyrim soundtrack and the bass is something else. Along with the separation, it really feels so much grander. Dragonborn gave me chills.
As for listening volumes, for most genres it's set to 10 o'clock. For classical and orchestral, 12 - 2 o'clock. I'm really quite impressed overall. Didn't expect such a big difference in the presentation compared to the WA7. Guess power makes a difference.