Worthwhile certs for all recreational divers are Advanced (AOW for PADI and Advanced Adventurer for SSI) because a lot of ops now require it for some or all dives, Nitrox, and Rescue (Rescue Diver for PADI and Stress and Rescue for SSI). There's no reason to do others unless you have a particular interest in the area covered by the cert.Now that I am getting back into diving and am a little older and have more time and financial freedom, I am looking at working towards my Master Diver certification. I have both a PADI and SSI LDS where I live. My original certification from way back when is through NAUI. I'd like to hear opinions and which you all think is better between the two. Pro's, con's, etc for picking one over the other. Thanks in advance.
This is for rec only. If you want to get into technical diving or become a dive professional, you will obviously need more certs.