WI-FI ROUTERS and Modems. BEST!! brand and why.

I use Linksys EA8500 without issues. My ISP box connects to it thru CAT 6 wire, and so does my audio computer. I haven't tried yet but was reading how the switching mode power supply noise from these devices in general gets into the computers even though the Ethernet connection is galvanically isolated, and that improvements can be obtained by using linear power supplies.
 

While I consider myself to have intermediate experience and expertise as an audiophile, I have had a lot of personal experience setting up and tweaking different routers and modems for my own house and for family and friends.  So based on my experiences with Cisco, Linksys, Belkin, and Netgear, I am brand-loyal to Netgear.  Why?  Fewest dropped connections, fastest speeds, and ease of setup, use, and "tweaks" if necessary or desired.  Your mileage may vary, but the Nighthawk line of routers (I've most recently had the R7500 and now utilize the R7800) have been rock solid and provided the fastest possible speeds with my previous Xfinity Blast service and my current Fios gigabit service.  And talk about signal coverage!  The previous poster who used an Orbi system must have a gigantic property:  My NIghthawk X4S provides 80-100% signal to all three floors of my house, including spots on the other side of concrete or plaster walls!

Like many other IT folks who've responded, I've settled on Netgear products.  I've found them to be reliable and they are easy to setup.  My router is a Netgear Orbi with one satellite.  It covers my 3 story 4600 sqft home with ease.  I have a Riva WAND Festival speaker sitting at the far end of my family room, and Riva WAND Arena speakers in the kitchen, family room, living room, and upstairs bedrooms.  

Ethernet is my preference for streaming music.  Years ago I wired my house using CAT 6 cable, with a Netgear Pro Switch on the 2nd floor and one in my man cave.  I stream via Ethernet to a Squeezebox Duet in my rec room and another in my music room, and to a Raspberry PI DAC in my office.

Using Logitech Media Server, I can stream anything on my NAS or the Internet to all of my speakers.

I'm a big fan of the Linksys Velop. 

I have the 3 unit setup and have one unit installed on each floor of my home. Each unit has two ethernet ports on them and I'm using one of those to handle the backhaul channel through ethernet.  I can regularly get 600 Mbps+ speed internally between devices throughout the home.  I have a 900 Mbps connection into the home and actual throughput (via Speedtest site/app) to my laptop and iphoneX via the wireless 802.11ac band is around 480Mbps with 32 devices connected.

Netgear Triband 4000 to NAIM Atom 
tidal and full size NAS files work great with fantastic Sonics 
eventually will run a wire of if installer is skilled fiber
router has required an almost daily reboot if I leave Radio streaming 24/7
.... could be a NAIM issue, not sure