AOL Radio only tunes AOL's stations obviously and iHeart Radio only does Clearchannel's stations, Pocket Tunes Radio can tune anything Shoutcast/Icecast, including custom streams and password protected streams. This means I can use it with Digitally Imported. It's also the only player that "gets it right" with respect to how it decodes things; it uses the Apple MP3 decoder for MP3 streams, and only uses its own internal decoders for AAC and AAC+. And those decoders use less CPU time than FStream, meaning it won't burn through your battery like a knife through butter.