I'd like to buy my own compatable xfinity modem/router (don't need phone). I was looking at the Arris TG1682G but heard it was not very good (junk).
@steelgtr wrote: ... Even if it's a refurb (legit) ...
Comcast takes the postion that, if a device is not listed on https://mydeviceinfo.xfinity.com/ and does not appear on http://mydeviceinfo.g.comcast.net/ with a check mark in the "Retail" column, it is not legit for retail purchase.
As previously stated, they may not activate it. And if they do, they are likely to charge the rental fee for it.