I've used cruising guides for over 30 years, primarily for my charters in the Caribbean and always thought they were great. I've always heard Charlie's Charts was a quality guide but never owned one. Since I'm headed to Mexico soon I decided to try out CC. I'm glad I did. The 13th edition of Charlie's Charts - Mexico is very detailed and clear in it's presentation. A very complete guide and a must for anyone cruising Mexico waters.
American Nautical Services is a fantastic source for cruising guides. no longer need to "search", I know where to go.