In my opinion:
Wired vs. wireless is just a matter of convenience and network connectivity and not SQ. My Netgear router/wap is a nice strong solid connection to my streaming Macbook. I do have the Netgear plugged into an Isotek power strip just because I could so that might help with the electrical stuff.
As far a a streamer, I had an Altair but went back to the Macbook, again for its convenience and flexibility. I use the Toslink to connect the Mac to the Dac so they are electrically decoupled.
I stream Spotify but bitperfect since I use Amarra SQ+ and I get to play around with its EQ and audio conditioning filters. It is pretty wild to see how much garbage the AC filters out. It sounds like computerized garble.