I am looking for a good pack for my dad. I thruhiked this summer with a Kelty trekker 3950 external pack. Despite what most everyone will say, I found it to be incredibly comfortable and superior to the internal smaller pack I have hiked with in the past and the others I tried on in the stores. Thus, I would like to help my dad find a few externals to try on, before he checks out the internal route. However, it seems as if kelty is the only company still making externals of any worth (there are those made for hunting but these seem to weigh a ton and have extra heavy features for carrying guns and such). Any suggestions on where to find externals or any internals that could compare? Thanks