I have a friend who recommends the Final Touch cables, he has several of them including the Callisto USB and ranks them highly. I had been considering trying them out but then got side tracked with Veritas Cables instead. They sound great in my system. I just got their Audax USB which is their top model. No idea how it compares to the FTA Callisto or Sinope but I am very pleased with it so far.
For reference, I am also using a Zenith mark III, along with a Modwright Elyse DAC, Luxman CL-38uC SE preamp, MQ-88uC amplifier, and then the Tannoy Turnberry GR speakers. I've been slowly switching to Veritas for all of my cables and in a few months will be exclusive once I do the power and speaker cables.