Should you buy or rent a cable modem?

[WindowsCentral.com]

We'll need some math.
This is one of those things you've probably never though about but most likely should. Because standing between your computer and all your connected stuff is a little blinking vampire that most likely is costing you money.
Presenting: The cable modem.
That's the little thing with three or four lights that sends the GBs to your Wifis and lets you do all the things. And there's a pretty good chance that you're shelling out money for it every month. Money that could be used to, say, buy a cable modem instead.

The decision is easy. Mostly.

Full story from the WindowsCentral blog...