Don't know about anyone else here...but for what it is I've enjoyed my DAC-2. I'd call it unforgiving but it's just a bit on the bright or metallic side for my taste.
Because of my busy season I've steered toward more headphone listening in the past 6-8 months and have spent a lot more time with the Schiit Lyr and Bifrost. Never been interested in tubes before, but this combination has been just fine with both my HD-600 and ER-4 phones. However, depending on what others have to say about the DAC-2se upgrade, I might consider upgrading mine.