Keiracaitlyn, thanks for the first hand review of Context Travel. I agree with you that small tours are a great way to get in-depth information. Plus, when I used Walks of Italy, the guide would often say something that would stimulate really good follow up questions and information.

Fuzzbucket, I agree that ParisByMouth is really fun. I booked a tour with Meg the first time we were in Paris and still visit a couple of shops that were on the tour.