FWIW: I did a cable shoot out with the AQ Firebird HC, Shunyata Sigma V2 NR, Synergistic Euphoria HC L3…, and RSX Beyond PC. I know the Dragon sits above the Firebird and it has a lot of fans. But it was beyond my price range. So, take this for what it’s worth: out of all the cables that I tried, I picked the RSX Beyond.
I went through the Cable Co. I took my time. I picked the one that sounded the best to me, in my system.
I know @macdude has experienced both, so there’s another big data point.
Nevertheless, you gotta try ‘em in your system to really know.