Smokepole:
no particular brand but when I try on other packs that my hunting buddies have I have noticed some that the back/lumbar part of the suspension was flat like a board, not conforming to body shape. it was a 'very tight, wide, flat strap of nylon.' there was some sort of frame in side that held it taught. it laid flat on the back vertical, not angled forward on top at all to 'sit' on hips. thus, unless very tight on the belt, everything was on the shoulders. and it was flat left to right, didn't wrap around body.
the most important thing is to try in person. even if you order online, try packs at a shop that can load them heavy.
if my buddy had killed, he would have been it trouble. I think it would have caused great pain with any weight in there at all.
