I had the same digital front end before I upgraded to Classe. I would use the balanced or the AT&T and avoid the optical. I used both in my system. A excellent AT&T cable was the PS Audio and a good balanced cable match was Tara Labs. You should be able to find a used Tara in your price range, the AT&T may be harder to find used. Try Paul at the Cable Company 1-800-328-9973. He is always a good resource. Good luck.
