Roku makes the best streamers. But which one should I buy?

Roku has the most apps, the simplest interface and the best search, making it CNET's favorite way to stream Netflix, Amazon, Hulu, HBO and all the rest. All Roku devices score well in our reviews, so which one is the best? Subscribe to CNET: http://bit.ly/17qqqCs Watch more CNET videos: http://www.cnet.com/video Follow CNET on Twitter: http://twitter.com/CNET Follow CNET on Facebook: http://www.facebook.com/cnet