The second you start thinking about a set-top box you've failed.
Such a stupid thing shouldn't even exist.
It should be integrated into the TV.
It makes sense that the thing you stare at should stare back. Therefor we need the camara inegrated into the TV.
There is so much more wrong with the idea of a set top box. It's for people that want the Apple experience on a non-Apple brand TV. Just reaches more market.
But the idea of a set top box is old and ought to be shot over and over until blown into oblivion.
I like to have my TV mounted on the wall, flush, no cables, boxes, garbage. Like a animated picture frame on the wall. And a set top box screws it all up for me. Instead I have to place them inside the wall behind the TV, but then I have issues with the IR signal reaching the boxes, so I get a extender, tucked it behind the edge of my TV, and the signal reaches 50% of the time. WiFi (AirPlay) controls are usually a bit laggy and that kills the experience.
So again, **** set top boxes.