The city tour was just okay. We didn't stop at the Titanic Memorial, which I thought was strange, yet we stopped quickly to take a picture of Queens's College and the graffiti people draw regarding the northern Ireland conflict.
It's not a tour I'd recommend.
The city tour was interesting, but the portion at Edinburgh Castle was completely rushed with little time to explore. I'd suggest going on your own to the castle.
This tour was just okay. There isn't much to see here. We did the combination bus tour and boat tour on the lakes. The boat wasn't air conditioned and it was 87 degrees, which made for a very hot and uncomfortable hour for everyone.