Digital Coaxial Cable 75 ohms choices

Tried the Canare (rca), Transparent Premium Coaxial (rca), Purist Audio Proteus (balanced), and the Tranpsarent Music link digital (balanced). The best of them is the Purist Audio Proteus used in balanced with the Forsell D/A and the Sonic Frontiers SFT-1 transport. My problem now is to find a SFT-1 since the one I'm using is borrowed from a friend.

Albert Porter, For clarification, is the purist audio single ended digital coaxial cable sound better than the Purist Balanced digital cable ? Many thanks, Ferdinand

I tried Canare as well, but among the others I tried, it sounds a bit grainy compared to Transparent, and Purist Audio. Again, my system is revealing enough to be able to detect the differences in different digital cables.