Ethernet Cables -- where do they matter most?

I almost invariably try all potential setups, and there are often surprises. Results are not absolute,  as new cables bring new potential and possible better alternatives. 

@douglas_schroeder 

Just didn't know if there was a general consensus on which 'tech' is considered a 'preferred' method of sending music from point a to b... etc.

Everything is important, but some things are more important than others.

In my experience, most important are speakers, speaker positioning, listener positioning, and room acoustics. Next is the electronic gear (sources and amplifiers). Far behind are analog signal cables, which tend to sound a little different from one another, but what sounds better on one recording may be worse on another.

Far behind even those in importance are digital signal cables (including Ethernet cables), cable risers, crystals, gongs, CD polish, and so on. Power conditioning makes a big difference to some users but never has when I’ve tried it. Maybe I have good power in my area. I do have a dedicated line into the audio room.

Take a look at Jim Smith’s book, "Get Better Sound," available from his web site, for another view of all this.

So, there you have one (pretty experienced) audiophile’s opinion. I hope it provides a useful perspective.

I wonder if Jim Smith's book on sound addresses wire directionality, you know, like in Ethernet cables and fuses and power cords. Maybe he needs to come out with a new edition. :-)

lightfighter2018, some claim SPDIF, some claim USB, are the best. Certainly no concensus, as some still say CD is best. 

About 3 months ago I was able to get the systemOptique upgrade for the SONORE Signature Rendu SE. No going back to straight Ethernet wire for me! The optical as employed by SONORE is far superior, as demonstrated on the same unit with optical upgrade. (See my article on this at Dagogo.com)