Hey - just read a Toslink and S/PDIF review on 6moons.com that had the WireWorld toslink cable and the i2Digital X-60 (that's the new coax design from the guy who designed the D-60), plus a bunch more cables. Might help!
http://www.6moons.com/audioreviews/toslink/toslink.html
http://www.6moons.com/audioreviews/toslink/toslink.html