Highlander 55l, cheap, comfortable and big enough to carry..
Main compartment
Snugpak Softie 9 Sleeping bag
Snugpak Underblanket
Inflatable Roll Mat
Bivi bag
DD Travel Hammock
DD 3x3 Tarp
Army Trangia Cookset
Spare Clothes in Sml Dry Bag
Food in a thermal lunch tube from a pound store
Wash Kit
Lid
FAK
Knife
Saw
..etc
Poncho lashed to lid
3x Sidepockets
Hat
Gloves
WP trousers
2l Water (will eventually make pockets on hip belt)
I'm 6' and set the back system to large.
None of that is forced in, except the SB and UB, which I put in a black bin bag, then compress with the sacks internal compartment seperator, which works on a draw string. Everything else just slots in together. This carries what I normally take out this time of year for an over nighter with very little fuss, and to my mind is a better solution to the 100l Bergen and side pockets which is way too big and uncomfortable to carry.