Nothing bums out a dedicated adventurer like yourself more than having to leave behind a favorite piece of gear because your pack is already filled to the brim.
A Day Pack is limited when you're adding shelter and sleeping gear. A giant like the M3 Backcountry Pack is a solid solution when you're in need of cavernous volume.
But when you need something right in the middle - like most of us most of the time - the M3 Junior jumps to the top of the list every time.