Among others I use a Zeagle Ranger, an older model, medium with large shoulders.
Never liked jacket style BCDs, so a backmounted bladder is a must for me.
Pro: Versatility (choice of bladders, custom sizes, options), very high quality, stock bladder good compromise, good balance UW, very comfortable, Ripcord weight system, roll down front pocket (perfect for backup mask when using FFM), no rear weight pouches (I use steel tanks
), excellent customer service
Con: Weight, bulk, inherent bouyancy, integrated weights make ready to dive rig heavy to move around, side pockets useless when weight pockets full
My ss bp/w with a 45# Oxycheq bladder, harness and 5 D-rings weights 5# less, yet I need less weight on my harness. Liked the Ripcord system, so with the bp/w I've been using a DUI harness. I really like the separate harness, easy to transport and keeps rig more movable. Hence in hindsight I would likely prefer the semi rigid harness of the Tech (?), combined with the Ranger's comfy shoulders and would likely order it with the 35# bladder now. The good thing about Zeagle, you can actually do that.