We have been using Dive With Martin for a few years now, most recently was two weeks ago ( yes, I still need to post a trip report) This trip we paid $240.00 each including Marine Park fees. Yes, that is a great price, but definitely not why we use them. His website shows $255 for the same deal plus Marine Park fees so that may be what he will charge, but he has always given us a discount, even the first time we used him ( if you pay cash). He has a good staff, friendly and helpful. You will be able to dive your computer. We usually request Orlando for our DM. With DWM we have been able to dive San Juan, Barracuda, Maracaibo, Devil's Throat and any other sites we requested with no problem. (he does not charge extra for those sites either). He picks us up at the hotel dock at 7:30 so we get to the reefs earlier than a lot of the other ops. His boats are nice, with twin 115s. You do the back roll entry off of them, but it isn't a problem and they will help you if you need it. The most we have ever had is 8 divers, usually less. He does supply fresh fruit and water, no parkas or towels like some of the other ops, but I don't think I would use that as a reason to choose one anyway. Most surface intervals are done on one of the beaches, Paradise, San Francisco...and if you want anything else to eat you can get it there. We use our own gear so I don't know much about the rental gear. He did get new BCs not long ago and I have seen a lot of people use his gear. We have had Pablo for our DM, too, and he is good. Martin has gone on the boat a couple of times, too. He is a funny guy....wears a thong and likes to frog kick so you may not (or may) want to be behind him

Whoever you choose to dive with, let them know your skill level and HAVE FUN! Cozumel is awesome!!!!