"The best of the bunch is Canyon Travel.
Canyon Travel is pretty much in a class by itself.
It has lined up some beautiful small lodges in the
canyons and in EL Fuerte and staffed them with
talented local guides. Canyon also offers a lot of
flexibility, and it takes responsibility for the people
it sends into the Sierra."
FROMMER'S MEXICO 2002 - 2005
"continually receives the best reports and has the most flexible itineraries"
MEXICO HANDBOOK - Moon Travel Handbooks