Thanks everyone for all your suggestions. I am going to be trying most of them.
I decided to keep my ROKU3 as I have been finding more free content. I found there is definitely a learning curve to this streaming stuff. But between my free over the air channels (about 45), renting DVD from RedBox and some free channels (movies) on the Roku3, I have enough TV viewing to keep me out of trouble. And I will continue to watch free movies using my laptop from hulu.
One interesting thing I just saw today at a home show was a device called EZ Streaming TV. I don't know much about it, but the salesman could find every movie I asked for on his system. Its a bit pricey at $350 (one time cost). It sure did get a lot of movies. And you get everything at one site. It looked pretty good. I don't know if anyone here knows anything about this or not. But If I didn't already have my Roku3, I would have given that box a try. They had a good story to tell.
Devices like EZ Streaming TV are not worth the price tag. Instead, I suggest you buy a Google Nexus player or Fire TV console and learn to side load Kodi to get access to free movies and TV shows. IMO the Nexus player is the better of the 2 because you have all the same access and functionality of the Chromecast plus Android TV apps. It also has a new "Live TV" feature that meshes up Pluto.TV and other apps into a single app with guide for additional Live TV content than what you get OTA with your antenna. The Nexus player is also the best front-end device to use if you use an HDHomerun Network TV Tuner/DVR as the new "Live TV" app is designed primarily for the HDHR but will mesh Pluto.TV and other apps if you don't have an HDHR.
The Fire TV has more native apps in its app store than the Nexus player and is more user-friendly but it is really designed into favoring Amazon content so if you don't have (or plan to) having an Amazon Prime account, I suggest you choose the Nexus. The Fire TV is also more popular than Nexus so it will have better support and more native apps.
Both are great choices but in order to use those devices to its max potential you will need to learn how to side load apps and attach pointer/air mouse device so you can use apps not "designed for TV". You will also need to know what are the best apps to side load for free TV, movies, etc. I also suggest you side load a 3rd party app store like Aptoid or Black Market and Chrome web browser plus Flash player to use sites like Ororo.tv . But, at a minimum, side load Kodi with Fusion repositories and you are golden.
Youtube has video tutorials on how to do this.
Hope these tips help.