Ethernet cables

You asked, so my answer is no. I doubt anyone here has honestly heard a difference they could reliably distinguish on sonics alone. Some might say use CAT 8 because of the additional shielding but I am even skeptical of that. As a mid-point between super cheap and stupid expensive, I like these simply because of the connectors and build quality.  If you have a long run, consider optical/fiber.

@tonywinga 

"high frequency internet data transmission rates behave like an analog wave"

"To summarize: The ethernet behaves like an analog wave. It’s not analog but the high frequencies have characteristics that mimic analog."

I am far from a digital or IT specialist but you lost me on this one.  It is my understanding analog signals are continuous electrical signals while ethernet cables carry non-continuous electrical pulses to transmit digital data.  Isn't that inherently two different things?