I don't know much ("much," in this context, being synonymous with "a solitary darn thing") about the technical end of it, but I've always wanted to hear the Chord DACs. They don't seem to get much press in the US, but a British speaker forum I sometimes visit seems to generally consider them among the very best DACs in the world (with the Resonessence Invicta a popular contender). I think the whole building-your-own-FPGA thing is pretty interesting, and seems to be happening a bit more often from some of the TOTL companies.
Anyway, I'd be more than a little interested to hear more about these... They seem highly interesting at the very least. (Who else puts Bluetooth on a truly hifi bit of kit? Piqued my curiousity for sure...)