Zavfino and Neotech OCC Interconnect

I wonder if DH labs or Cardas make a warmer cable than the Matrix Ref II?

I guess you'd have to listen to them both but zavfino buys all their OCC signal crystal wire from Neotech and Neotech has 10 engineers designing their cables, so I would definitely give them the edge, I use their flagship line which is the Sahara and the Amazon which is rectangular OCC single crystal wire which is even better than the round OCC.

Has anyone compared Acoustic Zen Matrix Ref II vs Cerious Technologies Graphene Matrix RCA Interconnects?  Both can be had here for about $500 used or refurbished.  The thought  would be to upgrade my Zafvino Arcadia RCA interconnects in my vacation home.  Thanks!