I recently purchased the ATV4K, and last night i hooked back up my long disconnected Roku 4. It's only when you use the roku for awhile do you appreciate just how much better the ATV is, from the standpoint of better designed apps, Better Image quality and speed, there is just no comparison, we'll have to see how Roku OS8 changes things, but TVOS 11 as of now is just so much better to use