MDW, you make a good point except that because of the numerous configurations available to BP&W and none being preferable to the others there are too many variables for a new diver to become accustomed to. Too many choices to learn about before being able to compare them on their merits. Yes, I do agree we should teach good diving characteristics to begin with. That can be accomplished with many of the back inflator style jackets available today. This allows for fewer choices to optimization for that choice and a baseline for those who choose to further refine their gear with the choices of BP&W or side mounts. That baseline is important in judging improvements.