My wife has spoken up!
She wants the ATV4K plugged to your new TV.
We have tried Android TV for two months on our Sony XH95. Overall Android TV is very good but not as stable and polished as Apple TV.
This is what we dislike about Android TV.
- iPlayer crashes three times yesterday.
- Youtube refuses to load this morning.
- Yesterday streaming quality on the TV was low.
- No multi tasking or resume across all app. With ATV, I love that I can open any app and pick up where I left off.
To sum up my trial of Android TV I would say that you don't need an ATV.
However ATV is a very nice nice to have with a very low cost per use if you consider the number of hours in a year that you would use it. Furthermore it's transferable to any TV or monitor.