I'm after a lighter/ small packed bag, as i have my dads ex marines down bag, which is huge, its great for winter camps but fills alot of space in my rucksack when i'm off hiking, just looking for a lighter bag, seen the SnugPak bags like the look and quality of the Harrier, Osprey, hawk and Special Forces bags, anyone have any and whata re they like? Cheers Cain