Okay, actually I used the Wireworld Starlight 5 for a couple of days, very nice, most neutral cable possible... Not a hint of edge, it was one of the smoothest most extended sounding ever for sure..
However I had to try the cardas as well.. Okay bottom line the Cardas is the most Musical involving and yes has little heavier weight to it, but i sounds far more intricate, and had a Bigger soundstage with the vast deepness in my opinion. It has a bit tame midrange, but all details are still there, not just jumping out like the wireworld, but all there just the same and pefectly nestled into the center of the music. It has extreme 3 d blissful sound, the Wireworld had a more tight held in the middle soundfield, the cardas just expanded more beyond the walls of the room..
Either really better? I think this comes down to taste, the cardas is a FIREHOSE at about 3 times the thickness, and bigger than most 12 gauge or even 10 gauge power cords, it is a killer cable for the price I paid.. Both of these were better cables than what they replaced in the Eichman silver bullet boulder cable.
To be better at explaining this, well the Cardas was what your best Tube amps or preamps sound like, and wireworld is more of what excellent balanced solid state sounds like. I found the Cardas less picky and more resolving with more listener appeal in the long run.. Just musical right off the bat, and always rich and full with plenty of sharp and dynamic details present, but in a tubelike way, vs right up front in your face.