So far for pure involving overall presentation, I still haven't found anything that I like more than the Assemblage 2.7. It has it's weaknesses, but there's something that I really like about the fullness in the lower mids to bass areas.
For detail, I would have to say the Weiss 202. There's a detail and smoothness to it that blows my mind, but I actually didn't feel like I got hooked into the music as much as I do with the Assemblage DAC.
So I feel a lot of it depends on what you're looking for. As a parallel, my experience with clarinets put two particular models at the apex of units still in production and readily available. You have the Buffet R13 and the Selmer equivalent. Both are excellent musical instruments and are constructed very very well...but they each have a different strength. The Buffet has a rounder and mellower tone that lends itself well to classical music, while the Selmer has a brighter and harder tone that makes it a wonderful instrument for jazz. I wouldn't say one is better than the other, overall...it all depends on what you're looking for.