This is how I understand DAC technology...We've basically reached a level where the conversions are solid on all levels and differences are hard to hear, so people need to push build qualities, features, etc.
On a personal note and to totally contradict my last statement, I ran a Gungnir (next step up from the Bifrost) in my system and found it too harsh/aggressive (especially with the HD800), so I tend to stay away from Schiit DAC's. I run a Peachtree Dac-It in my systems and find it pretty neutral...Neither too laid back, nor too aggressive, just right. And it was cheap too. YMMV, that was just my personal findings with it.
The Peachtree IDAC is on my short list. A friend has one in his home stereo setup and it sounded good to me, I have a modi on the way so ill see if it does what i expect it should. Im happy with my sound as far as detail, bright, dark etc... i just want to smooth out the edgyness i have from the computer soundcard