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

I recently had my ISP install the most recent router they have available for their customers: Calix. I was surprised to see and hear significant improvements in the video and audio performance on my television and the audio delivered from my Aurender streamer. I had no expectation that the router would affect system performance at all, let alone so significantly.
 

For reasons not worth going into here, the Calix does not work for me in my current home. So, having observed that their router made an obvious and easily detectable difference in the delivery of audio and video information, I decided to buy three different routers to determine which offered the best performance for me in my home and with my system: Eero 6 mesh, tp-link axe5400 mesh, and tp-link axe7800 gaming router. All three resolved the technical problem I had with the Calix, but their handling of audio and video differed significantly. Without belaboring the point with too much detail, the two mesh systems’ performance were approximately equal to that of the Calix. But, the TP link gaming router delivered significantly better audio and video services than any of the other three. At the $159 Black Friday price, it was one of the cheapest, yet effective tweaks I’ve made to my system in years. I highly recommend it.

@hce1 

"But, the TP link gaming router delivered significantly better audio and video services than any of the other three."

I am curious, would you describe specifically how the TP link gaming router made your audio system sound better (i.e., which sonic attributes of your system improved and in what way)?

Xfinity has a list of compatible modems on their website somewhere.

Xfinity pricing is bizarre. All I wanna do is exclude all the premium channels that are bundled including a Netflix subscription I don't use I make an effort to do this they say they're gonna charge me overall $50 more per month. A substantial increase just to reduce the level of services.

The equipment charges along with those broadcast fees are getting quite crazy.

Price and I do have a separate modem and router that I don't have to rent but they do have compatibility issues so you need to check very carefully. 

@fastfreight  Yes, so long as there is not a metalic Ethernet cable that is going from inside to outside.  Then the only thing you have to worry about is long Ethernet runs.  Some are lucky enough to not need Ethernet, and can run their home 100% on Wifi.  Those folks don't have the same concerns.

Please remember that for power protection the NEC and whole house surge protectors still recommend surge strips at the point of use in addition to anything in your panel.  If you live in a relatively safe area you may not care but here in the south where we are prone to lightning strikes I recommend extra precautions.

@lalitk Yep, that is what I had to do.  I've done that every since I had roon but I thought that with a modem with 2 ports I might be able to eliminate one cable and one connection....but I think the modem has 2 parallel 1 Gig systems as opposed to 2 ports into the same system.  I've never gotten around to buy a nice cable to go from the modem to the router so I'll order one today.

thanks,

Jerry