Find somebody (multiple if available) to dive with who uses a BP/wing, preferably somebody who has used one for a while. A lot of people purchase the equipment on the internet without really touching the product. If you decide on a Hogarthian harness you will need help in adjusting the straps, d-rings, and crotch strap. Will you need a weight pouch pockets or a weight belt? Do you need an STA? I am presently diving the same backplate and single wing since 2000. I have only replaced the harness and the backplate pad once because of wear and tear using twin tanks and chlorine in the swimming pool when teaching.