The benefits of buying your own modem clearly outweigh the charges and challenges of renting a modem from Comcast. When you rent a gateway (modem and router in one unit), Comcast uses your home as a WiFi hotspot. That means others in your direct area (neighbors and people parking near your home) can connect to this network. While this may be secure most of the time, this method Comcast uses will slow down your own home network. There is a way you can change this setting by calling Comcast though.
The rental fees are forever going even after you have paid for the unit many times over. With leasing fees up to $15 a month, depending on your market and modem type, this clearly adds up to a bundle over time. This money can be better spent obviously.
Obviously, Comcast will tell you the benefits of renting a unit from them is the better option. However, all the options they describe can easily be obtained with your own equipment. They list speed, coverage area and support as the selling factors for their xFi Gateways. Support may indeed come in handy if you are in a bind but we all know what support is like from Comcast.
Overall, buying your own modem is the best option for Xfinity customers. For about $60 you can buy a Netgear CM500 Cable Modem and Netgear R6080 WiFi Router for around $50 if you need a router. Or if you prefer an all-in-one unit, the new ARRIS SBG10 combines a modem and router together and retails for around $120. If you also have home phone service with Comcast, the ARRIS SBG2482AC is the best option. The SBG2482AC costs around $200 and is a modem, router and phone eMTA all-in-one. All of these options can easily be installed by the home owner and setup via the web. To activate a new modem, visit our install page. View all Comcast XFINITY Compatible Cable Modems.