I have only worked with RCA Cables throughout the period of time I have had a CDT > DAC as a Source.
OCC Silver and OCC Copper and Mapleshade Ribbon have been used as the COAX Umbilical.
There has also been a Silver Cable used that was a custom cable builders bespoke design and was claimed to have been quite an expensive Cable to purchase, this was a loaned Cable from a friend.
The Mapleshade Ribbon had proved itself in favour off all others tried and was my in use choice for a long period of time.
Last year I introduced a D.U.C.C Wire Cable and after a period of time and reintroducing the Mapalshade's, the D.U.C.C had proved itself as the most attractive and has become the main used Cable.