Have been on Insight, several Globus and Trafalgar. We found Insight to be by far above the others, although they were good also. Hotels were better, meals were better as was the included sightseeing. Globus tours have been good but plan to spend lots on "extras" on meals and sightseeing. Trafalgar was not as good as the others, hotels were not in the center of town and every seat, was taken. One single man had to sit in the center seatin the back of the bus for the whole 19 days as no one would split up......Please rethink taking 4 teens on an organized tour. They are fast moving, up early, on the bus early, and other other passengers (mostly middle age and older) have very little tolerance for any kind of disruption or children.