No external frame packs for me, please.
All I carry are alpinism-oriented packs (light for their capacity) because they suit my purpose perfectly. I don't use trekking packs either, they are usually too heavy for my taste, too many pockets, etc.
But again, I don't have to haul quartered game out of anywhere because I don't hunt. I don't need it to be super-rugged because I don't usually go through thick bush/forrest at all. And I don't need the material to be spark/fire resistant because I don't make open fires (at the very most, I use a stove (liquid fuel or butane canister) and I take the outmost care not to get any of my gear on fire.
Do you need any of the aforementioned features? Maybe you could rethink your strategy... a ligther pack makes for a happier camper.
Mikel