My wife is on the smaller side of normal, and we've been diving over 20 years now. Even though she has done hundreds of dives, many advanced, she still doesn't consider herself advanced. Over the years, she's had several BCs, starting with a Scubapro Classic jacket, then tried some women's BCs from Zeagle, and for the past 6 years has been diving a Dive Rite Transplate harness with a steel backplate and Dive Rite pad. All the traditional BCs she tried wouldn't fit right, fit sloppy, and never made her happy. Now she wouldn't consider diving anything else besides a backplate with Transplate harness - it fits her perfectly, is comfortable, and simple. There is nothing inherently advanced about it. As an interesting aside, her cold water Transplate harness is size medium. I picked up a Dive Rite "lite" steel backplate on Scubaboard with an extra large Transplate harness, and I've got it adjusted so it fits her just as well, so that should give you some idea just how tailorable these things are