Very interesting comment. I seem to be the opposite. I have probably used a dozen different packs and they all seemed comfortable (other than the sheer weight) on my back, shoulders and hips. I have a Golite Race, but it is about worn out after 5 or more years of use.
The REI Flash does fine. I seem to have to adjust the straps often or it sits a bit crooked on my back. But it too is getting old and the design and arrangement doesn't seem convenient to me. Thanks for your comments!
Jim M