Need an " exciting sounding" digital cable

I have never experiment digital cable until tonight. It turn out my Kimber DV75 is a bit soft and smooth compare to a Naim DC-1. The comparison was made on the new Naim Dac and Audio Note Dac2.1 Balanced. Same result.

The Naim DC-1 is a small step toward the right direction. More definition, a little more spark, clearer bass while maintaining the natural warm of Kimber.

I wonder which cable should I try to make a bigger step for more exciting sound.