From my experience, which is long - whether or not it is "considerable" is open to debate - I have "C" cards at various levels from YMCA, NAUI, PADI, NASDS, SSI, IANTD, and NSS-CDS.
My personal favorite for the OW training program is SSI.
That said, the most important factor in choosing your training is the instructor. Second most important is the organization immediately behind the instructor - the dive shop. Then come the facilities available to the instructor and the shop, and finally the agency.
Rick
My personal favorite for the OW training program is SSI.
That said, the most important factor in choosing your training is the instructor. Second most important is the organization immediately behind the instructor - the dive shop. Then come the facilities available to the instructor and the shop, and finally the agency.
Rick