How do Dunlavys compared to new stuff?

One unresolved mystery to me was (I could be wrong on this, as rumors abound)that Mr. Dunlavy did not believe that speaker wire made a difference.
This is not to imply that all wire that 'costs more' is better, but that wires that are well conceived, made of purerer grades of copper (silver/gold)can sound better.
I've been involved in too many 'blindfold listening tests' to discount that. But the last I was aware he discounted this...odd it seems for someone with his knowledge.
I'll gladly fold if someone knows this story more intimately.