I have been using a HPG Aston House Back Country for about a year for this purpose. Their Aston 3 is the latest version. I love it...
Similar packs used:
Kifaru Antero
Kifaru Marauder
Kifaru X-Ray
Kifaru Express
Kifaru Molle Express
Kifaru Late Season
Kifaru Siwash/Navigator/AG1
Mystery Ranch 3DAP
Other Kifaru, Mystery Ranch, Mountainsmith
HPG Umlindi
I like this HPG for the volume that fits overhead bins perfectly, carries very comfortably without a belt, is comparably lightweight, came with a flap for additional capacity, and has attachment points for a lid
(I use a Kifaru XTL with a shoulder strap and an organizer) My use has been 4+ days of clothes, laptop, keyboard, mouse, docking station, with room for more in the panel, strapped below or on top... Bottle pockets on the side haven't been used much...
Adding a Prairie Belt would be an upgrade, but for me, it's carried fine without...
