Carlos knew so much about the history of the pyramids and also had some opinions that he shared, which i found very interesting. He was also very reliable despite the fact that the marathon was on the day we left and the roads to the hotel were blocked. I would definitely recommend him if you want to know details about the history and to see the museums that are often overlooked.
TOUR GUIDE RESPONSE: Tracy: thanks a lot I enjoyed a lot touring the pyramids with you cause you had questions that were interesting too. Hope that on your next trip to Mexico we can contact again and see what's new on Teotihuacan.