@chauncey I am considering the Yggdrasil myself and would be interested in your comparisons. I am also looking at the OKTO DAC8 (likely get this one).
Another DAC that I owned and liked a lot for my 2-channel was the Musetec 005. However, I did not like it as much on my headphones.
At this point getting a DAC is about synergy. I have an idea of getting a Playback Designs Edelwise or Dream DAC (damn expensive) though I think the 10x cheaper OKTO may be better for my headphones and tube headphone amp.
Synergy is my main criteria now and not really more expensive is better.