From Wikipedia: "many marketers of high-end speaker cables cite electrical properties such as skin effect, characteristic impedance or resonance; properties which are generally little understood by consumers. None of these have any measurable effect at audio frequencies"
a lot of stuff that I researched and all of it is pretty much bogus.
Skeptics need to read less and listen more.
There is nothing out there you can read that will yield proof that different cables sound different.
Just go to a hi fi store, be upfront and tell them you are not buying anything, but you are a cable skeptic and see if they will prove to you that more money spent will present a higher quality listening experience. I don't think they will decline.