Hey Jay, I haven't heard any of them, but think the Dac-It looks interesting. There was a thread somewhere-you could find it on a search like-Dac It Vs Bifrost- and the conclusion of the review was the DAC-It was an improvement over the Bifrost. But, I believe that was before the uber upgrade thingie.
I was debating the two myself, but I'm going a different direction. I'm not listening to computer music. I've spent the better part of the Spring and summer ripping my entire collection-about 8,000 songs-not massive-but still a big job for me-into Lossless and stored on a NAS. I bought a Sonos Connect streamer to stream through a speaker system adjacent to my PC.
Sonos has an OK DAC...definitely better than a stock PC DAC, but could be better. I primarily listen through my Asgard-2 plugged into Sonos or into my stereo when listening to CDs. My Sonos is connected to my stereo.
After putting a lot of thought, I'm going to buy a Rotel integrated amp with a nice Wolfson DAC with both analog and digital capabilities. I have my speaker set up in a spare bedroom/computer room...computer stereo all in the same space.
In my case, my hope is to upgrade my entry level receiver with a better integrated amp that will bypass the DAC in my CD player or Sonos to the Rotel. I could have bought an integrated amp and something like the DAC-It externally. Peach Tree makes a comparable unit called the Deco I believe-integrated amp you can use with a PC if you choose or with analog sources or both.
But, I know most of you are probably using your gear for a PC set up. I'm sure the uber Bifrost or DAC It would both be nice pieces in your kit.