Like golf clubs with golfers, it is not the bcd that makes the diver. A well trained and proficient diver can use any bcd, and look like he/she has been using that same bcd for decades. Buy what works for you, but don't buy until you have had the time and experience to know is going to be best for you. My bcd journey went from jacket->back inflate->bp/w, and now I have what is best for me. Your journey may have a different result.