IzziTahil: I did all my diving with "Aguas Claras". I spoke to other people who also went to Noronha and some dived with "Atlantis", I heard no complaints either way. However Aguas Claras have what they call the express: very fast small boats that leave every hour for one tank dive. I don't get along with boats (sea sick), so these boats came up handy as you reach the dive points in just a few minutes and it carries a max of 8 divers. You gear up completely, tank, weights and all while the boat is still docked, and once it leaves it goes full throttle. The services and the dive master were top class, but mostly when you are on the boat. Dealing with the dive operator as far as payments and the whole set up was a little complicated regardless of the fact I speak portuguese.The other boats I saw in the island were old and very slow, one was carrying lots of divers that i thought i was in West Palm Beach. Apart from that, Noronha was once again my best vacation ever. The island is small, has plenty of restrictions imposed to the tourists and residents in order to protect the environment, but if you don't mind the lack of luxury, the beaty of the place is quite impressive and certainly unique. I am attaching my favorite photo from Noronha.