I just recently migrated to fiber. This isn't optimal yet, but this is my setup. Modem is in my office that connects to mesh router. My listening room which is adjacent to the office, high quality Ethernet cable from mesh router to listening room. In the listening room, the Ethernet cable goes into a Muon Pro filter. Muon then goes straight into the Aurender. I'm very pleased with the result and the signal from the Aurender is smoother with this setup vs. copper.
Future upgrades for me will be a LPS for the mesh server (maybe a Ferrum Hypsos) and a high quality network switch just before the streamer.
My modem and router are very close to my listening room. Is this better? I'm not sure but one would think that running the fiber optic cable longer to get it closer to your listening space would be preferred over a long run of cat6.

