We took 2 tours. The first was "Russia Through The Eyes of the Russian People". It was wonderful. We went on the subway, ate lunch in a restaurant, tasted vodka and rubbed elbows with the people. Very, very interesting.
The second day we toured the "Hermitage" and "The Church of the Spilled Blood ". Our tour guide was extremely knowledgable. The Hermitage was breathtaking and should be seen by all tourists. It is unbelievable.
The Church of the Spilled Blood was interesting but not exceptional.