I've been very, very tempted by this book. However, there have been massively negative reviews of it by people I respect, and it all points to another 'Phaidon cookbook mess':
David Sterling (author of 'Yucatan' - http://www.amazon.com/review/R2WHE6OG...) : "...obviously the text was not written by anyone who knows the regional cuisines of Mexico to any degree. And to be sure, the recipes were not thoroughly tested."
Diana Kennedy (yes, that one - http://www.amazon.com/review/R1FSSVTT...) : "The comments for this unwieldy book come from people who don't know or don't care about real Mexican food. With at least 60 mistakes and 16 recipes of mine used, without my permission or acknowledgement this book is not to be taken seriously. Shame on the Phaidon editors and their ridiculous promotional blurbs!"
I know a few Chowhounds have the book, and will have cooked from it - how has it gone?