Cable Between Node 2i and Chord Qutest?

Thought it be a better topic for here vs. “over there”...😆

I have a Bluesound Node 2i going to anChord Qutest via a DH Labs SPDIF.
it sounds good.

but, is USB “better”?
Is there a better solution than coax?

if so, what is it?
thanks,
ian