We really like our Roku. I’ve looked into an antenna, but we are in an area with poor/no reception. I would LOVE to cut the cable, except we want Fox News. Comcast does not offer Fox in it’s basic lineup. Other than that, I’d drop the cable in a heartbeat and just keep the phone and internet.
We had some pixilation recently, on one station. Haven’t had a problem since then.
Beside Roku, you can also look at the Google Chromecast stick. It is good for streaming from Internet too.