I'm looking into an underwater system, and trying to decide about getting a Nikonos or something else. I've used a Sea & Sea MX-10 before, and got some great results, but that was also in Belize, which is fantasy snorkelling. This time I'm going to the Florida Keys, and still snorkelling. Will the Nikonos be overkill for a snorkeller, especially with a flash unit? or will I be able to get good shots at snorkelling depths without a flash on a Nikonos?