I've only just had time to begin using the Roku Express 4K+ but even in the few hours I've spent I can see there is a huge amount of viewing material. I'm planning to drop my cable service and wanted to preview just what is accessible through the device, and for me, at least, there is more than enough entertainment to make a smooth transition.
I have an older Roku / Sharp TV. The Roku interface was very slow and I had to restart frequently. Was thinking about replacing, when Roku offered this unit as a refurbished unit. Too good of a deal to pass up. Well the power supply was bad, but I located an extra. What a great surprise! It is fast, great picture and a voice remote to boot. No need to replace tv, this works better than I could have dreamed.