simcoediver once bubbled...
Are the Dos Ojos and Choc M cenotes close to the ferry dock from Cozumel? Sorry I really do not know my Mexican geography that well.
We started off on the Cozumel and then switched hotels to one in PDC for the Cenotes. Dos Ojos was pretty close to PDC (which about 45 mins from the ferry). Choc Maal was further. We used Dive Aventuras and the DMs were great. As the ocean conditions were poor, Dive Aventuras was trying to get us to switch to a closer Cenote so they could handle the increased Cenote divers (switching from the ocean). The owner kept saying that Choc Maal was not all that special and that one of the other Cenotes would be just as good. I told him that we had specifically requested Choc Maal and thats what we wanted. All the while the DMs are in the background urging me on (they wanted to go to Choc Maal too). In the end, the owner agreed and we had a great trip. Except for that little 'discussion', it would have been a GREAT experience, so now its an almost great - I would still highly recommend them.