Just to make sure I haven't been misunderstood, I'd like to elaborate on a few ponts..
I do not believe that as the price goes up, correspondingly, so does performance.
I do believe that as the price goes up, performance can increase, but at a diminishing rate. Performance can also decrease as the price goes up.
I do believe that a well designed speaker cable will provide better performance than 12 or 6 gauge stranded copper, or zip cord. I can't comment on the Belden 8718 wire that Dan recommends because I've never used it.
Is it justifiable for a cable designer to charge hundreds or even thousands of dollars for a few feet of speaker wire? I believe that is up to the consumer, but the impression I have gotten from this thread, which was inititiated by Dan, is that he wanted to advise readers that spending one's hard earned dollars for anything more than 12 awg or Belden 8718 is the equivalent of throwing one's money down the drain.
Sorry, but I don't abide by that contention. My experience tells me that you can do better. It's easy for anyone to find out for themselves. There are at least three cable designers belonging to this forum, and all offer full return priveleges. Rather than being a skeptic and accepting someone else's truth, even when they speak from years of experience, I think it would make more sense to prove it to yourself.
I'd like to hear from the cable designers themselves who belong to this forum, and ask that they offer some arguments to support what they do. I am not targeting Emperical Audio, but I just visited its website, and I found it impressive in the way it attempted to present a valid rationale for its designs. It offers reference level speaker cable for as much as $3619.98 for a 15' biwire pair. Is this overpricing? Is this snake oil? Again, I believe the consumer needs to make that decision for himself, but Emperical offers a 45 day return policy, I believe. In the old days, snake oil peddlers came into town, sold there wares, and were gone by sunset. I don't think you will find that to be the case with the cable designers here on Audio Circle.
Finally, if you have limited funds to spend on audio, maybe speaker wire beyond 12 awg should be the last place you allocate that money to.