Personally, I think anything beyond a decent Blue Jeans Cable Cat6 ethernet cable is a waste of money. My dealer loaned me a $1800 Siltech ethernet cable to evaluate (his idea, not mine). Between it and my $20 BJ cable it sounded better on some things and the BJ cable sounded better on others. In the end the conclusion was they sounded different, but that's it. Neither better overall. My wife agreed, and she never knew what I was playing at any moment.
I use Siltech cables otherwise, but the fancy-pants ethernet cable went back to the dealer.

