This is going to be controversial...

So reading here and elsewhere about LAN isolators I deceided the only way to really know if/what they did was to try it myself. It appeared that the GISO was the one to have, it arrived a few days ago.

Now, I am a believer in cables/wire for my system and can easily hear differences in speaker wires and interconnects. I have, however, believed that RJ45 (from CAT5E) cable is all the same and what is delivered on it is impervious to any audible changes. My house is entirely wired with CAT 5E, my switch panel is a D-Link 24 which has a built in AC PS that is grounded. Until the recent advent of $1000 RJ45 cables and the discussions on their merits as well as commentary from some experts here, I never gave them a second thought... until I inserted the GISO into the ID41 input of my 818v2.
The changes were immediate and substantial.

The biggest change is dimension and depth. Instruments and performers have BODY, lots of it. Images are wider and much more layered. The definition in the sound field is much improved. Also, everything seems to come from a darker (or quieter) background. Dynamics are greatly improved.
Unplug the GISO and everything collapses.

So now I'm thinking there has to be a difference in RJ45 cables whether that's the cable spec (5E, 6, 7) or brand.

Also what would 2 more GISO's, one on the TwinStore and one on the C10 do? I sent an email off to Ralf Koschnicke for his comment here and I'm waiting for his reply.

So there you have it. As of today, the GISO stays connected to my 818v2...