This tour was exactly what we were looking for: a concise, focused tour of a lot of the city center's highlights with great commentary to accompany the view. The tour guide, Robert, was extremely knowledgeable about Rome both past and present. He mixed in great tidbits of fun things to do and see in present day Rome while painting a rich picture of the history the city has been through. The tour ended up lasting closer to 3h30m instead of the 3h00m listed so we even felt we got a better value for our money!
I would recommend this tour 100% especially if you can get one of the smaller group tours and have more personal time to talk with Robert and pick his brain.