I have two proper backpacks, an old UK made Karimor Jaguar from the late 80s and an OMM Classic 32 I bought recently. Although the Jag is pretty good shape considering its age it's the OMM that I reach for now.
The OMM is actually modern take on an old Karimor design from 1973 but if you take all the removable bits off it comes in at around 380g. That's almost 1.5Kg lighter than my old backpack. For short weekend trips that's a massive saving.
I seem to remember a story about Atom Packs and Aiguille Alpine. Aiguille make really tough packs for mountain rescue teams to throw equipment in. Atom Packs was founded to use slightly less robust but lighter materials for through hikers by a lad who did his apprenticeship Aiguille.
I think their merit in both approaches and I like the trade offs depending on use cases.
EDIT: I've just noticed that Aiguille now do "light" weight versions of their packs in 420D nylon. What I like about that is they are actually cheaper instead of charging a premium for thinner materials (hand made prices but still).
