Bluesound node 2i

@howardlander 
It seems like you won't have any trouble using wifi in your neighborhood. I live in a city rowhome and had issues with neighbors (5gHz router).

Regarding an ethernet connection, I changed to wired when I was tweaking my Node2i for better performance. My findings were CAT6 was an upgrade over wireless, then changing to CAT8 provided noticeably better sonics possibly due to shielding on individual conductors. Music sounded fuller with more weight vs. Wifi.

I highly recommend that you use a quality aftermarket cable for the Node, it's a noticeable improvement. A C7 cable is required (also called a figure 8 cable). With this upgrade, Wifi vs. ethernet sound quality will be negligible.

I started out WiFI to the Node.
Cat 8 is much better for me

I have a Vault 2 which by necessity is wired.  Sounds great.  In another system I have a Node 2i run wireless on the 5ghz band.  Sounds great.  

The only problem with wifi would be dropouts as some have already mentioned. You can go into your routers settings and see which channels you're using as well as the channels any neighbors are using. If you happen to be sharing one just change yours. I never noticed any difference in sound between wired or wifi but I had to many drops in my situation so I had to run a wire. 

no drop outs given the buffering, shouldn't matter

have drop outs, get wired