Cambridge 840C DACs vs. Wyred vs. Eastern Electric

Anyone compare the DACs in the 840C to the either of the Wyred DAC 1 or 2, or the Eastern Electric DAC? I havent been using the CDP in the 840C, mostly only using it as a DAC for my Wadia Ipod doc. I enjoy the sound, however I am curious about some of these newer DAC's.

Any info is appreciated.