We have 2 TV's. One is an Onn Roku TV, so a streaming device isn't needed. The other is an Element TV, so we got the Roku Express. It works well with our Internet service (no freeze ups), and responds fairly quick to app selections. The only drawback is that, while the Roku remote is programmable to the Element TV (remote turns TV on and off), it does not appear to be programmable to the sound bar connected to the TV, so we have to turn it on/off manually. There may be a "work around", but I have not found it, yet.
It is really easy to set up and use. I bought one for me and set it up it was very easy to do. I can watch my favorite shows and find movies that interest me.
Now I do not have a "cable" bill. I also bought an antenna so now I can watch all muy shows without that huge cable bill. There is a lot of content too!
Only problem is I cannot figure how to channel changes from high as 203 down to channel 4 quickly without having to down channel by channel rather than one quick jump.