The Stealth Varidig digital cable is a reference level coaxial that is designed with all-silver and offers some special geometry that makes it a surperior design. Many owners of this cable have said that it is a cable unmatched in performance over any other cable they have tried.
It's not an inexpensive cable (and nor should it be for this level of performance), but neither is it the most expensive -especially when they have been on AudiogoN auction (see a recently closed auction to get an idea about this cable and pricing, http://gonmain.iserver.net/cgi-bin/auc.pl?cablintr&998882890), selling at a substantial discount. Additionally, with Stealth's money-back return policy, it's at least worth an audition.
Happy shopping!