While I would tend to disagree with a blanket statement that "...silver [makes] no difference", there are a lot more factors in cable design than whether the copper is coated or not which affects what they sound like: cable geometry, conductors, networks, shielding, dielectric material and mechanical connections to name a few. IMO, everything is hyped to a certain degree - it's just the age-old sales ploy to get your attention. Only your ears will tell you if it's worth the scratch.
Are silver coated cables a bunch of hype?
I'm looking to upgrade some cables (digital coax/comp. video), and I've seen recomendations re: Canare. Originally I looked into a few silver coated copper cables. I spoke to a tech at Canare cable and he said none of their cables are silver coated, and that silver made no difference when it came to signal transfer. Is a good quality copper cable as good or better than a silver coated cable? Does the silver coated copper have a cheaper copper grade/purity to cut cost when adding silver? Thank You, Chrisrn.