We ended up going almost full circle TWICE even though it is almost tour hrs round trip. Why? Well, because we hopped on and off and had three good guides, but when we ended up on Will's bus, we wanted to hear him do the whole thing. He was that good. Clearest voice and the most facts and trivia of our four guides. Again they were all good and the stops were well planned (except adding a 2nd stop in Balboa Park would be handy), but consider yourself extra lucky if you get Will. (He looks a little like Rick on the new Magnum PI by the way)