Following up, after a couple of days with the Empyrean exclusively, I started doing some more A/B'ing between the two. While the Empyrean is more comfortable, more expansive sounding, and easier to drive, I am just not feeling as engaged with the music. I'm not noticing anything new in tracks or being able to really focus on one specific instrument as easily as I can on the Ether 2. I was A/B'ing the Tron Legacy soundtrack and then the Revenant soundtrack on both. The synths, strings, and bass lines sound like they have hair on the Ether 2. The bass to mids are so raw and punchy that it instantly makes me appreciate the intensity and drama in the instruments. I can also more easily make out how many different synths are playing on Tron, or the different types of strings in the case of the Revenant. On the Empyrean, the track sounds nice and big, which actually suits both the soundtracks nicely, but that's the only thing I really notice. I don't notice anything standing out about the instruments, they just sound more distant and less detailed compared to the Ether 2. There's this dip in the middle region of the Empyrean where all the raw characteristics of the instruments seem to lie, and the Ether 2 brings out nicely while keeping the treble under control. Additionally, the lowest of the bass region is shaved off on the Empyrean and that subbass on the Ether 2 adds a lot to intensity and contains that last bit of detail.
When I listen to Leonard Cohen, I can almost feel the a warm breath behind the voice in some of the closer mic'd tracks, I'm just not having that kind of a connection to the music with the Empyreans. For my listening, Ether 2 is pulling ahead based on being noticeably more detailed and engaging.