I just bought a 10ft balanced Silver Dragon HD800 cable from Drew at Moon Audio. He said he ran out of V2 cable so he gave me the new, not-yet-announced V3 using 7n UP-OCC silver wire, similar to the DHC silver, but less than half the price. Terminated with rhodium FP-601s. New cover - flexible, no microphonics.
To my ears, on the Rudistor RP010B or the DNA Sonnet, the HD800s sound dark, lacking in upper harmonics, using either the stock cable or the Adrenalin cable, which is based on the Jena cryo-d OCC wire that I use for all i/c's.
The Silver Dragon V3 made the HD800s cleaner and fuller all across the spectrum. The sound field is mesmerizing - like total immersion. They are only a teeny bit dark now, compared to my reference LA7000s. In oher words, the V3 HD800s are a vast improvement.
I was about ready to sell my HD800s. They were usefuI only for a cable demo to my son.
Now I will keep them, and I will enjoy them.