Ethernet connection from Comcast/Xfinity; Data usage; good cable modem recs

[mr_lebowski]

1. My advice ...

1) Get a Docsis 2.1 cable modem that's compatible with Xfinity from Amazon or even OfferUp/Craiglist. These are good up to Gigabit internet speeds. I have an Arris, it's great.
2) Get a small (2 or 3 node, depending on home size) mesh WiFi system. Put one node in your Garage. Get at least an 802.11AC system.
3) Make sure the PC in the garage has at least 802.11AC level Wifi network adapter. If it doesn't, just get a USB one (or a PCIEx one if you're handy with getting into your PC) they're cheap.

If you shop around and esp. if you buy some parts used, you can set up a really good home wifi for less than 200 bucks. And abandon the CAT cable. I know you're probably attached to it, but it has no advantage to your situation.

Not sure on the internet usage but an easy thing to do to help make sure nobody in the neighborhood is ripping you off ... is to change your WiFi password.

You don't do any streaming like netflix or prime or whatnot?