I want to replace the router/modem Comcast with a high quality for streaming

I've been having internet issues for the past year.  My sound system is hardwried using an audiophile switch and I have little to no problem with it.  but elsewhere in the house wireless has been bad.  I've upgraded my mesh system twice, first to a nigh quality TP-Link mesh and then to an eero because so many friends said they had no problems with it.  Finally I called my cable company  (spectrum).  I have to say I had the best customer service I've had for a while.  A real person answered the phone and scheduled an appointment the next day.  The tech seemed to be very competent.  He replaced the cable from the street to the house and the modem.  Immediately I confirmed that I had no problems.  Life was good.  

Then 2 weeks later I start having the same problems.  I'm thinking the modems they are using aren't great.  Looking at the label on them they are house brand.

So I'm following this thread and if someone recommends a modem I may buy one.

Jerry

For Comcast/Xfinity I have been pleased with my Netgear NightHawk modem.

This connects to  Netear Orbi Mesh Router with an optical link to my streaming system. The optical link replaced a 50 foot cat-6 cable which was a rreal improvement.

Arris SURFboard modem and Orbi mesh with Comcast/Xfinity here.

Compatibility is simple, just check - most are compatible.

No problems whatsoever over several years. When these reach EOL I would consider upgrading within the same brands.

The Orbi mesh base router has ethernet ports. I wire one of them to a switch and then hardwire from the switch to my server (which is in the network room).  There is fiber in-line between the switch and the server for isolation. Also, hardwire from the switch to my streamer (which is in my system room) using fiber for isolation. Two other music systems have endpoints hardwired via short Ethernet cables to the two Orbi mesh satellites. So, wi-fi to the satellites and then short Ethernet cables to the endpoints.

No noise issues at all.

Good luck.

I’ve recently been introduced to streaming by my partner in XtremeFidelity.

i was the vinyl guy, not wanting anything to do with this internet thing.

i now spend 6 months in Florida.the system I’ve put together is amazing. 
each new upgrade component I’ve inserted in the chain just peels back more of the “crap”.

im to the point that I question whether I have an modern/router good enough.

System:

Bonn NX , Tidal Contros, Tidal Intra, Tidal Piano G3s, all Siltech 880 loom.

all components plugged into Equitech 2RQ.

@KR4 I am not recommending in line extenders! I am recommending wifi extenders.

OP, yes streaming has come a long way. My streaming system sound quality is the same as my vinyl playback… and both are very very good and in my investment level are about the same cost.