I bought a Dive Rite TransPac, and my diving buddy loves it - it packs beautifully and he loves its performance on dive trips. I (a girl - OK woman!!!), didn't go for it so much - kept banging my head against the tank valve. I have a Zeagle Ranger and it is all decked out and I LOVE IT!!!! Can't bang my head at all anymore. I didn't like my TransPac, but that was just me. Before the TransPac I had a Genesis Athena, but had the same head-banging problem with it. Now you daughter may like the Athena or the TransPac (the TransPac is a dream to pack - really flat and takes up no room), but I tried a Zeagle Ranger of a friend's and was just in love with it from the minute I had it on. That was about 35 dives ago, and I'm still in love with it.
I'm short-waisted, have a very thin waist with a medium sized chest and hips - I'm hour-glass shaped, and like something that has padding around my waist - it doesn't ride up on my ribs or hip bones, at the same time I can snug in the waist which allows the tank to hit right on my back so that I'm not banging my head - can you tell I don't like banging my head?!!!
I'm also a clothing designer and am very picky about how things fit - you can imagine what I go through for a wet suit! That's a whole other novel!
The Zeagle Ranger can be all decked out - more expensive; or very basic - less expensive. I'm a Dive Master, so I dive a lot so makes sense that I get something that suits my quirky taste.
Hope this helps.