I haven't done in a big trip in a number of years, and I want a new pack to serve two purposes:
1) Have an extra pack to try to coax my girlfriend into backpacking (so I want to minimize pack weight but maximize comfort). It needs to be unisex.
2) Have a new lighter pack for me to use in the event she doesn't want to do the JMT (needs to be bear can friendly).
I currently have an REI UL 60 that weighs in at 49 ounces after some cutting (see my 2008 gear list in my profile). I really love the pack despite the weight because of the load transfer and frame, etc. I had a 12 pound base weight on my last big trip and could easily have gotten under 10 with replacing gear besides the pack. In fact I likely would stick with this pack if it were just for me.
Both she and I need a substantial frame/rigidity and good load transfer to the hips.
My two current contenders are:
ULA Circuit: I like the build, and it seems similar to my current set-up. At 39 ounces (maybe 35 without the accessories) I would be shaving almost a pound off my current pack. Seems solid with good load transfer.
GG Mariposa 2012: I'm not very familiar with the stay and load transfer on this pack.
I am open to other suggestions for packs that:
1) Are lighter than 49 ounces (not hard to find)
2) Can swallow a bear can (or mount one outside easily)
3) Have a substantial stay or frame with optimum load transfer to the hips (i.e. loosening the shoulder straps all the way the pack can rest upright on the hips).
4) Are very easy on the shoulders with a solid hip belt
5) Good amount of volume (I like to put my shelter and quilt in without the stuff sacks occasionally).
Thanks in advance.

