Most Apple TV models look confusingly similar: they’re pocket-sized devices that resemble oversized, square hockey pucks. Sure, the Apple TV 4K is about twice as big as the third-generation model, but that’s a pretty subtle difference.

The relatively similar exteriors actually hide a lot of differences. The things that set the 2nd and 5th generation Apple TV models apart are huge, for example.

The latest model — the Apple TV 4K, due out in 2022, the 5th generation — has some notable differences and is a revolutionary improvement over previous Apple TV models. But read on a little carefully, or you’ll think the 2nd and 3rd generation models are identical. (They’re not.)

For almost everyone, the answer is the Apple TV 4K. You can usually find the last two generations for sale, but if you can afford it, you're better off going for the newest one with the most storage.