What do you think you will be doing 2-3 years from now.What can you afford now.What can you afford 2-3 years from now.If your like me and want to be a recreational diver for a couples of years...
I don't think it is that complicated - at least not for me. First question is, do you NEED to buy a BC? If your goal in diving is to make a once (or maybe twice) a year trip of some kind, then I'm not so sure one even needs to buy a BC. You can just rent one and call it good. Even if it costs you $50/trip to rent a BC, you'd have to make a lot of trips before you get to the cost of buying one.
Now - assuming one wants to dive "locally" - wherever "locally" may be, then it seems like it would make sense to buy one. So, what to buy? For me, it was a reasonably easy decision. I bought my BC before the first pool session. I wanted to train with the same thing I would be diving with, and I knew I would be making a 50 dive trip to Australia immediately after my OW course, and I also knew that trip would represent the majority of my dives for quite some time - so if I were EVER going to buy a BC, I should buy it before that trip....so I didn't have much "lead time" to decide what to buy.
I didn't know about SCUBABoard and did no research, and just relied on their advice. I know, not the way to do things, and not what I normally do with things, but in this case, its what I did. I ended up paying full price at the LDS - and definitely could have done better "elsewhere". Sure wish I had that to do over again. I would have tried to talk them down - or SOMETHING.
I needed something suitable for cold water, drysuit diving. My LDS only had 2 or 3 that would meet the need (and nothing in a BP/W). As it was, I bought the Seaquest Black Diamond, which is a back-inflate with the ability to carry a fair amount of weight and provides a fair amount of lift - which is what I need for local diving. I really like this BC too. Had I had it to do over again, I would have done independent research and got edumacated - but I probably would have bought the same BC - or possibly a BP/W - but that dive shop was not in town at the time and I had no clue about such things.
As for the "what will you be doing in 2-3 years from now" thing - I didn't see how it would possibly be any different from what I would be doing initially. Here it is, 5 years later, and that's still true. In 2-3 years from now (7-8 years after initial certification), I hope to still be using the original BC I bought. However, a few years ago, I did buy a lightweight (jacket style) BC for travel purposes. My main BC is rather bulky for this purpose - which I found after taking it to Australia. In retrospect, I think maybe I should have not bought it, and just kept using my main BC. I didn't realize that I can "break it down" a bit for travel, but now I do...so, oh well. Live and learn.
Once my main BC wears out, I'll probably buy a BP/W - not because I necessarily NEED one (i.e. doing tech stuff), but just because it seems like a better way to go. However, I'm not going to replace perfectly good equipment to get there. That's why I don't take the GUE Fundamentals course. I just can't justify replacing perfectly good equipment (and quite expensive) that meets my needs, no matter HOW much much better the alternative is.
Hope this helps....someone.
Cheers!
nd