Yea it is for PADI, I know certs do not make you a better diver but I would want to collect as many as I can to put in a folder for my personal pride.
As many cert cards as possible? If that is what you want, then I have some suggestions:
- nitrox courses (any agency) are nice and usefull once you have your buoyancy under control.
- PADI equipment specialist, no diving required. I have the card. Some people say it's useful.
- first aid courses: DAN Basic life support + first aid / O2 / advanced O2 / neurological assesment / hazardous marine life - and PADI EFR. These give you five to six cert cards and make you a valued dive buddy. Go get them all. Really, get them. You could dive like a god, but unless you can save my life...
- SSI Science of diving, a very decent course (unless you took CMAS or NAUI courses that cover science already).
- do not limit yourself to one agency only: For example, I have both PADI AOWD and RD and CMAS */**/*** and them some. Get them all. You could take CMAS courses, NAUI courses, SSI courses etc. Try something (non-commercial) club based like CMAS.
- if you have the money, GUE courses are exceptionally good (haven't taken any but read the books), but unfortunately you won't get that many cert cards
- don't know if the weight correlates with skill, though