If you like classic rock: Classic Vinyl, Classic Rewind, and Deep Tracks.
Why? Just listen and it will all make sense.
Also, a poll in this case doesn't make much sense because it all depends on the type of "Rock" that you enjoy. Classic Rock and Heavy Metal are not the same.
But if I had to vote (and I did), I would say my favorite channel is "Classic Vinyl".
P.S. Where is "The Bridge" in the poll?