...I have used a few different SFPs in my network over the past five to seven years, or so, as well as a few different optical cables and FMCs.
For 2-3 years I used a Sonore OM, which was excellent, and much better than the cheaper Amazon off-shore options. I also used the high-end Sonore power supply with the OM.
The network experiments began with daisy-chaining the "expired" Cisco 2960 switches. I settled on two, but had as many as four during my investigations. I also used the UpTone eRG switch, which I still have/use in a different capacity. I had ethernet filters, USB cleaners, various cables, expensive or not.
I swapped over to fiber because I had a 35' run from the network closet, through the walls/ceiling, to the basement audio room.
The original copper network ethernet cable passed through spaces that had Romex wiring, can-light "pig-tails" and other lines not run by me. I thought it might be a bit of an electro-magnetic soup.
I am also about a quarter-mile away from a company that develops sat comm products for military and civilian use. Oh, the antennas I have seen! And Humvees testing products, etc.
I assumed I was in a great location for RF/EM traffic.
However, not having the tools or knowledge, I couldn't practically test this impact in my home. So, I thought it might be a best-practice to make the 35' run with optical, to reduce the exposure of my network to all this junk. That was the genesis of my investigations with optical solutions.
Eventually, fiber infrastructure came to my neighborhood, so I added this to the home, in addition to the copper ISP. Audio is on the fiber feed; everything else is on the copper. Sounds great.
I had previously tried to create a virtual version of this concept using the EdgeX device, but that was a huge PITA. I never did get it working, even with help. IMO this device is not user-friendly, unless you have more-than-casual networking skills.
Eventually, the Taiko network products arrived, and those guys seemed to have a different take on network noise and solutions for audio.
I added the Taiko Switch to my network, and switched back to copper. BTW, this is easy for me, because I ran CAT6, CAT8, SM and MM fiber at the same time. Materials are cheap. Labor/time is expensive. I ran it myself, so easy to manage (for me).
For about a year, or so, I had a modded Buffalo switch upstream from the Taiko Switch, contrary to general guidance to use only the Taiko product.
Eventually, I removed the Buffalo, and just used the Taiko Switch. After about a year, I added the Taiko Router, and went with the DAC cabling suggested by Taiko. I retain that set-up currently, using OEM adapters/transceivers from Taiko, although, one of the cables is an Amphenol from AfterDark.
Everything sounds amazing.
I have omitted some specific details re: product models, etc. as I am waiting for a friend to come out from surgery, and don't have access to the products to double-check for you folks.
Net-net:
--Good power, even to cheap products is an improvement.
--Better products are better, incrementally.
--Wi-fi transmissions may not be the killer you think, but managing the band-width and radio power is good.
--Copper can be as good or better than optical.
--You need to test this stuff in your place to determine the outcome that matters to you.