I bought the new Roku 4 on day one, and it is now set up. it has more power and a better WiFi format. Roku was always fast, now it is faster, and streaming looks slightly better as a result. Buying a new 4K TV soon, so I will be using the Roku 4K format. I do expect to see the difference based on viewing 4K next to 1080 at Best Buy. I think the set you buy may also make a difference. The new Samsung 4K sets, for example, have upgraded a lot of their PQ features anyway in the 2015 models, so the difference in PQ will be real.
I purchased the new Apple TV 4 this morning. The streaming was always better looking on the Apple TV over Roku by a small margin, but the Roku 4 closed that gap. But the new Apple TV 4 will allow us all to put our iPad apps and iPhone apps on the Apple TV screen, thus negating the need to take the extra steps to air play. That is a very nice feature. We all have apps on our mobile devices that we air play. Now, those apps will be on the screen. And, since the new box has more power and better wifi, I assume the picture quality will improve slightly, just as it has on the new Roku 4.
I wonder if any of you know if we will have to sign up for all the apps we have now again on the new box, or whether the new box will allow us just to port our mobile apps and the apps we have now on Apple TV to the new screen without additional steps added. In other words, if we have HBO Go, will we have to download it again and sign in again on the new box. If so, that will be time consuming, given all the apps we have now.
Mike