If you were going to get a new Cox approved modem, would you get instead a modem/router model, or only a modem to hook up to a Netgear Nighthawk router that is a few years old? If only a modem, would you get a Netgear one to match the router brand or think it wouldn't matter? What are the advantages and disadvantages of a modem/router combo unit?
The advantages of a combo device (telephone, Internet, WiFi), obviously, is 1 device, 1 outlet, 1 spot on a shelf. The disadvantages, however, as you already know, is if 1 component breaks, you'd need to replace the entire unit. I feel it's best to have separate components for not only easier troubleshooting but also cost if you need to replace something.
If you have landline service, Cox must freely issue you a telephone unit (eMTA), but you'll need to return it when canceling your service. The thing about a freely-issued eMTA is it's not a standalone unit. An eMTA from Cox is also a DOCSIS; therefore, if you have landline, you'll also get a freely-issued DOCSIS.
Manufacturer compatibility isn't an issue because networking devices use worldwide standards or protocols to communicate.
Allan is trying to push the Panoramic router. Stick with your Nighhawk.
List of Cox Certified Cable Modems.
