Choice of cables will also depend on the intrinsic sonic qualities of the source as well, and the room's overall effect on the sound.
Cardas cables tend to be on the warm, laid back scale, Wireworld tends towards more neutral to a bit brighter.
I did a shoot out between Cardas and Audioquest and the Audioquest was far better.
You really need to figure out the sonic signature of the entire system and what you are trying to achieve.
