Personally I really enjoyed their debut EP "Silent Cities" already, but on "Ethereal Solitude" you can really notice how their sound evolved. The entire composition is now more coherent, the slow and atmospheric passages now go hand in hand with the fast and driving ones. Both the vocal and the instrumental work gained some noticeable improvements as well, it's really hard to spot a weakness here. I really love it. A true gem of atmospheric/post black metal.
Favorite track: Celestine Tides.