The Van Den Hul "The First" makes a very good digital cable. Got a good review in Stereophile. It is an interconnect, but I believe it is available as a single (not a pair) for digital. There is also the VGH MC Silver Digital Cable. I use the LAT Digital cable (about $100).
Digital transmission cables
I am looking to upgrade the digital cable between my Altis Centauri transport and Altis Reference DAC. I currently use a Nordost Silver Shadow. It is very good, but perhaps there is something out there which would be an improvement. I've heard that the Kharma digital cable is excellent, but any other recommendations would be very helpful and much appreciated. Many Thanks.