We have been using Roku products for a long time. We recently bought a new smart TV and thought we could get away with the built in OS. Turns out that we had been spoiled by the speed and simplicity of Roku. The Express 4k+ has everything we need, and it works great! And then the cost makes it a no-brainer.
I have been a customer of Roku for several years. I purchased the Roku Express 4K+ for a smart TV that has a poor interface. This Roku device transformed that television into something great!