The "never harsh" comment is a bit of a red flag for me as I wouldn't want to lose too much of the Utopia's highs.I wouldn’t say it’s harsh in the general sense, but it is certainly harsh on some tracks, whereas the Black Dragon was never harsh.
However a lot of people seem to like the Black Dragon and the price is pretty reasonable for the long length I require.
With every cable there seems to be naysayers.
The cable that seems to garner the most consistent praise for Utopia here and elsewhere seems to be the rather expensive Lazuli Reference.
Then I read comments like these and I think maybe the Black Dragon is a safer bet (i.e. less to lose):
interestingly,I bought a pair of the Dana cable for my Utopia and quickly sold them because I could not hear an appreciable difference between my Moon Black Dragon and the Dana....
The stock cable is on the warm side as well. Strikingly so, I'd say.
In fact, I once I helped administer a blind A/B test for an acquaintance and out of 20 attempts, he was only able to tell the difference between the stock cable and the Lazuli Reference about 55-60% of the time.