Here's my take on it: I bought an Apple TV and It Just Works. Movies, subtitle, adding a few key apps like Netflix and Youtube. It's the same name because it's the same whole experience.
It all works juuuuust until it doesn't and you have to upgrade to the next tier. I assume the experience will be like the one i had with netflix, where once i had a 4k tv i realized i HAD to upgrade my account and internet bandwidth coz otherwise stuff would look blurry and buffer(for kids who can't tell why stuff doesn't look as good as on the neighbors device)
Obviously not a problem for people who can just buy all the extras but if you're budgeting then it does get quite nasty and lead you to the media server route
