Okay, I'll admit it... yes, I have been lurking on this thread. Even the title gives caution, but I wandered in, so now I am going to confess... I'm a Cardas guy.

I started with zip cord in the 70's, graduated to heavy duty Monster zip cord, and finally got hooked on Cardas. There, I said it..
I think my challenge on all the cable wars that go on is they are almost like a political debate, either you believe, or you don't. I'm not an engineer and don't understand all the cable science, but to me, they do make a difference to my ears, in my room, with my system. Could I hear the difference in some type of a cable bakeoff? Likely not. Is it that I know my cables 'should' sound better because of their cost, therefore they do? Possibly...
Probably the biggest challenge I have is if I am changing out cables, it is usually because I am also changing out something else. I end up hearing some improvement and I honestly can't say whether it was X or Y that made the difference. I know, not very scientific...
However, you've got me thinking about this so I am going to do kind of a reverse test. I've spent a lot of money on cables over the years so I'm going to order a pair of Signal Cables speaker cables (either Ultra or Silver) and replace my Cardas Clear Cygnus speaker cables. I only need 1 m so it isn't a big investment, and just may save me a ton of money in the future. I'll bring in my wife as the evaluator as she has much better ears than me, and a music degree as well. Give me maybe a month or two, and I'll give your her honest feedback. Stay tuned....