The tour is well worth your time and is quite a tour - both in the amount and distance covered. Circus Maximus was the main goal for us, however, much more history was covered than we expected. We highly recommend this tour if you want to get a good cross-section of city life and history. If Italian is not your native language, do not worry - we went on an English tour and had zero issue understanding our guide.
What a Wonderful guide, We enjoyed the excellent overview of the museum, plus the little details which made the tour so interesting!