Also another pack you could throw into the mix is the 2012 GG Miraposa!
Not so sure I totally agree with Dbcorona, the new 2012 redesign of the GG packs make the carry much better than previous versions!
FWIW while load lifters are a great addition, with proper packing (loading) of the pack I have carried upwards of 30# in a frame-less pack (no load lifters)! IMHO load lifters help to position the load that is above the shoulders (in the extension collar) in line with the spine so that it doesn't pull away from the body causing major problems, but, nothing heavy should be up that high so to me (and my packing style) load lifter's are not needed! YMMV, HYOH, IMHO