[noggin]

Ok, then at the end the shield should be the overall better option if not Apple is announcing this weekend a unique streaming platform. So I will stay at the moment with my Odroid Kodi.

 For Netflix and Prime Video the ATV 4K is a much better choice - the automatic frame rate switching alone for those makes life so much easier than having to manually select 24/25/30Hz output based on the shows you are watching. (Which is what you have to do with the Shield TV if you want judder-free video)

For Kodi/MrMC alone - it's a trickier question. You get automatic frame rate switching in Kodi with both, but the Shield TV does HD Audio Bitstreaming.