what digital cables for my dac?

I have a cheap sony player hooked up to a monarchy dip,and into a mccormack Dac-1 with the $400.mod and nordost blue heaven interconnects to my Audio refinement Complete amp and nordost blue heaven speaker wire into my Martin Logan Aerius speakers. Yes I know I need a better and stronger amp,but for now please I need some input on digital wire going from my monarchy to my dac currently I am using $75 Kimber wire,What is good for $200 max,at 1/2meter? Tara,Nordost,kimber,mapleshades,crystalcable? Thanks for the input,Nick