I owned the Node and the Vault and thought that they both sounded better wired. I had used computers for streaming prior to that and thought that the Bluesound sounded roughly equivalent, but I enjoyed having the computer out of the system and Bluesound made Internet Radio so much easier.
Better streamers are out there and I don’t think $5K is required. My Cambridge Audio CXN 60 sounds better than Bluesound at roughly twice the Node price.
I would definitely go wired. For a few hundred dollars you should be able to hire an IT installer for 1-2 hours to wire your dwelling. Once done you should never need to repeat. Think of it as part of the cost of the streamer. You could try this with the Node first