Anyone use the Amazon Prime Instant Video on your iPad and send it to your TV through Airplay (via Apple TV)? How does it compare to the way it looks using the AV adapter? Because the AV adapter leaves black bars all the way around. You can mitigate some of it by adjusting the picture settings on your TV but it's still not like it should be. Is the Apple TV/Airplay way any better? Or should I just bite the bullet and get a Roku (since Apple apparently isn't going to put a native app on Apple TV for it)?