Im a NAUI Master Diver and PADI Rescue Diver and I have to say they are both good agencies that teach just about the same material. I think NAUI might tend to be a little more class room oriented, and PADI more simplified for the recreational diver. Either way my experience has been that it's the intructor that makes a class, not the agency. So find a recomended instructor in you area who makes the class not only educational but fun.