Tim, basically if you have a good internet connection, services like Netflix will stream well.
If you have an old two wire system in your area, ATT or Verizon will probably be pretty weak.
If they have optical cable in place, they may be viable.
Internet is where cable is really strong. It has to do with the physical attributes of the system delivering the signal to your home.
Greg, verify that ATT has optical fiber in your area. If yes, it's viable. If they only have two wire, forget it. You'll pay the same bill, but get crap service.
Satellite systems are ok for TV, but they can't do internet. So they farm that out, if they offer it, to a separate provider, usually ATT. So you are back to two wire, at best , very modest speed and bandwidth.
I tend to side with Mesh here(If I understand him correctly).
Go with cable internet. Assuming the coax cable and connectors in your home are healthy, Roku, Netflix, etc will perform well.
As you know, I work for Charter, but TWC is comparable.
If you have more questions, ask away. I'll help you as much as I can.