When I did OW (in California), I went with SSI because that's what the shop I did it through was and I had no clue about any cert agency.
When I did AOW & Rescue (still in CA), I sought out a highly recommended instructor who happened to be PADI, so that's what I got. At this time I still had no clue about cert. agencies.
Now, 15 years after I did OW, I'm looking at doing a divemaster here in Chile. Almost all the instructors here are PADI, apart from a handful that are CMAS and one that's NAUI. I've sent emails to as many as I could (about 10 in total - I only excluded three LDS that I've had terrible experiences with in getting gear serviced and the techs are also the instructors) with a load of questions about their programs, to arrange interviews and hopefully go diving together so that I can see if they suit me. Unfortunately only two have answered: One 5* PADI shop and a guy that does PADI and CMAS. Looks like I'll probably end up with PADI as the 5* guy seems to have his act together. We still need to meet so that I can check out his operation and go diving with the guy before I commit.
I guess my answer to the poll is Other: whoever suits me best for what I want to accomplish at that time, but not excluding any of the above
When I did AOW & Rescue (still in CA), I sought out a highly recommended instructor who happened to be PADI, so that's what I got. At this time I still had no clue about cert. agencies.
Now, 15 years after I did OW, I'm looking at doing a divemaster here in Chile. Almost all the instructors here are PADI, apart from a handful that are CMAS and one that's NAUI. I've sent emails to as many as I could (about 10 in total - I only excluded three LDS that I've had terrible experiences with in getting gear serviced and the techs are also the instructors) with a load of questions about their programs, to arrange interviews and hopefully go diving together so that I can see if they suit me. Unfortunately only two have answered: One 5* PADI shop and a guy that does PADI and CMAS. Looks like I'll probably end up with PADI as the 5* guy seems to have his act together. We still need to meet so that I can check out his operation and go diving with the guy before I commit.
I guess my answer to the poll is Other: whoever suits me best for what I want to accomplish at that time, but not excluding any of the above