We took the private tour so we could get the most out of the experience. Our guide, Carlotta, couldn't have been better. Not only did we get into the Vatican almost first in line, but we ran to the Sistine Chapel and were with only a handful of other dignitaries. It was a peaceful and pleasant experience and way more than we'd hoped for (plus they gave us a beautiful book of pictures we couldn't take while in there). We had a very pleasant time throughout the rest of the tour, getting pictures by ourselves at several key locations, and best yet, we got a private blessing from the Chapel priest on our way back through the Chapel, all thanks to Carlotta. It was very special and made our visit that more amazing. Highly recommended trip.