I have Comcast service and am reasonably satisfied. I purchased my own internet modem/wifi-router. It will probably pay for itself in about a year or so.
I tried streaming Sling TV over my Roku for several months, thinking I'd be able to save some money while getting the cable channels I watch the most, but I found the service to be a little unreliable so I'm going back to a Comcast/Xfinity package.
I also recommend that you contact Tom at
TheVillagesAV.com...he'll give you the best advice given his experience and can also set you up with everything you need if you are uncomfortable doing it yourself.
Good luck!