I'm calling BS on that. A student is more likely to get a quality class from an independent than through a shop.
Walter, I generally find that I am in agreement with many of your comments on SB, but I disagree with the generalization that you are making here.
A student will ultimately need to find a shop they trust for gear, service and fills and potentially to connect to a dive community as well as continuing education. If someone has this in an SSI shop, why not stick with what they know and trust? Having an "independant" instructor does not necessarily ensure higher quality instruction nor, in my opinion, will it increase the likelyhood of a quality class. Many "independant" instructors are, for all intents and purposes, simply store staff somewhere as well. Even independant instructors will have a few places they prefer to refer people to. Also, Independance can also be a path to limited oversight of activity and poor quality instruction... it isn't as simple as an independant instructor will be more likely to be better - which is how I read your statement.
A quality shop that wants to be a successsful business in today's environment needs to deliver excellence. That isn't just a push students through a class process. It is delivering excellence in terms of instruction, pre and post sales support, and a suppportive environment for students and all levels of divers.
SSI's approach does have a built in system that at least provides a mechanism for the monitoring of instruction quality. I don't believe that it
ensures quality, but I certainly don't think it hurts at all. I believe we can all agree that there are surely some poor quality instructors in every agency... I think SSI is trying to find a way to limit the number they have... it certainly won't be perfect, but I respect their attempt to adddress it.
As for being tied to a store, yes, it obviously can have its disadvantages, but I think we need to be honest that a cross-over to another agency isn't impossible by any stretch if someone is ultimately disattisfied with the arrangements. And that will occur without the costs of previous instruction being totally wasted.
To the original poster: I think the key is to find an instructor that you really respect - someone who does it the way you believe is truly an excellent example of how SCUBA instruction should be done and learn from them. I also agree with the comments above - you want to dive more so you get a better idea of what great looks like. However, do progress through the learning, and do continue to progress in your dive education. Look around for someone you believe is doing it the way you want to do it and work through their agency... Much like looking for an original instructor - the instructor is, in my view, more important than the agency - but don't discount working with an SSI instructor you like simply because of the association they require with a store.