I Went on the best of Tour. We went to 7 different places. Food portions were quite generous. By the end of the tour, we had eaten for two days and I couldn't finish any of it because I was so full. Our guide was great. It was informative and never felt like I was being overloaded with information. She would give you some information and you could either ask more questions or just socialize with your group. Along the way to the different spots she would give the history of an area or point out different restaurants to us.
Great for tourists, people new to the area, or locals who want to get out and tour some of the best spot of Paris.
It's cheaper if you do an early bird sign up.