Because Roku is open to third-party developers, you have a much larger content selection than you get on Apple TV. The Roku has all the standard stuff Apple TV has like Netflix, Hulu, and sports services like MLB.tv. But you also get a lot of stuff the Apple TV doesn't have yet like HBO GO, Amazon Instant, Spotify, and Pandora.
you want to buy or rent videos, there's Vudu, a virtual store with a selection about as good as Apple's. You can stream purchased videos directly to your Roku and they remain tied to your account so you can access them whenever you want. It also has several shows available the day after the air, which can come in handy for those who no longer subscribe to cable.
That was my biggest problem with the Roku 3. Over the years I've purchased a ton of movies and TV shows through iTunes, meaning I'm already locked into Apple's system. The Roku 3 is so good I regret doing that. If you're like me, you'll have to repurchase a lot of your favorite content through Vudu if you decide to switch to the Roku.
You get access to more streaming services and content than the Apple TV has, plus an incredible interface that helps you find what you want better than anything else out there.
"We are not backing any particular provider, but rather the broader market shift to digital entertainment delivery... Bottom line in the streaming race is that we remain neutral. We truly just want streaming digital media to take off. We pretty much have a "powered by Rovi" strategy. We provide all the parts to make it happen (as mentioned above from the encoding, to the video delivery) so we are backing anyone who wants a great streaming experience.
entertainment is bound to no one supplier or platform. I see watches, glasses , net books , gaming PCs, Autos, entertainment centers, business break rooms, libraries, man caves, all adding leisure escapes for temp enjoyment.