It was a terrific way to see the whole of Paris. We bought a 2 day pass for 4 people and we used all 4 tours, hopping on and off where we chose. The commentary was very good and despite the heavy traffic on the Champs Elysees, the drivers were very patient. Just one fault though. We had to wait over an hour near the Notre Dame stop to connect with the blue Bastille bus route. It could be better timed. We paid £82 for 4 people for 2 days, si we thought it was good value.