Want to buy modem, use TC

I'm pretty sure that any will work.

Your concern should be what will work with Comcast.

Here's the web page.

Even if you're not a current "Blast" customer set the slider to "Blast!" anyway.

 

I suggest Arris and I would do minimum 6183 or better the 6190. Not sure what plan you have but either will give you coverage for most of the plans available. 6183 easily provides 150/20.

The main difference is the number of channels they have access to. 6183 will do 16 and 6190 will do 32. The number you have access to is based on your local system and its rare to see more than 16 and when you do its 24 so, go with the 6183 unless you're in an area you know for sure offers more than 16.

 

Read my post: http://forums.macrumors.com/threads/internet-provider-is-blaming-my-router.1960314/#post-22652844

and a thread: https://www.dslreports.com/forum/r3...I-suddenly-seem-to-have-no-background-traffic

Per the latter, Comcast seems to be resolving a lot of their network issues. I used to get dozens of issues logged on my 5 routers (personally and in my offices), but only ONE over the past 3 weeks since Comcast cleaned up their network issues - that's ONE error in all of my 5 offices and at my home office. I've installed a packet sniffer and it's reported zero packet drops over the past 3 weeks as well. Yeah, I can't believe it either...

Regarding my post, I had all kinds of problems with my older Moto routers - since I made the change related in my post, my networks ran much better, aside from the error messages related in my modems' console logs. That "tweak" makes sense, and really smoothed out the "relationship" between my Airport Extreme/Time Capsule and my Comcast router.

FWIW, I'm going to recommend the Netgear CM500. The guts are exactly the same as the Arris SB6183 (including the built-in spectrum analyzer), but you won't need to spend extra money on the pair of sunglasses you'll need with any Moto/Arris modem...