I can only speak for the one Dive Op, but I have talked to other people and they consistently rate well with people that have used more than one Op. I went with a group led by a guy that has dove with several Ops and likes Deep Blue the best.
Like cxg31 I dove with Deep Blue in June, and I can't say enough good things about them. The owner Matt was extremely flexible, taking us anywhere and everywhere we wanted to go. Each day we would just let them know when we wanted to dive and how many would be diving, and they were ready for us at the allotted time.
We had 3 different DMs and both Pepe and Gabriel were fabulous. They must have all the reefs memorized because they found everything. We were shown sea horses that were darn near invisible with their camoflauge, plus turtles and rays and .. . and. .. you get the idea. I have heard great things about Sandro also, but I never dove with him.
The DMs were very knowledgeable and they definitely let people dive to their abilities. Oncve they know that you know what the heck you are doing, they just take you places and let you explore.
We requested a repeat dive at the Wreck and they accomodated us no problem. We got to spend a long time inside the wreck exploring everything. It was awesome. I definitely plan to go back, and I will dive with Deep Blue again.
You would probably have a good time with almost any of the 70+ dive ops on the island, but my recommendation is Deep Blue.
I expect a full report when you return.
Wristshot