At least at my local NAUI dive shop, PADI is generally considered to play too fast and loose with the rules. Especially with new and untrained divers. The joke

At least at my local NAUI dive shop, PADI is generally considered to play too fast and loose with the rules. Especially with new and untrained divers. The joke is PADI stands for “Put Another Dollar In” Not that I’ll never go with a PADI dive, especially if it’s the only game in town where I’m visiting. But I generally bias towards NAUI, and would highly suggest anyone new go with a NAUI cert.