A Video Bleg

Melissa and I have been checking out the available lineup on Hulu Plus and Amazon Prime Streaming, both of which you can stream on a $99 Roku box. Between those and my considerable library of ripped content we stream via Apple TV, we're left wondering:

Is it time to ditch the dish and say goodbye to DirecTV?

If anyone has any practical experience, we'd like to know if internet streaming is up to the job.