The terra 35 ticks most boxes in my book. It has great stability and fits realy well and feels close to your back, the verticool space gives reasonable breathability. It also has a removable stiff board that can bend for different back shapes (difficult to get right so once you have it comfortable leave it). It has lots of pockets and realy nice thick shoulders straps. It is bigger than other 35L rucksacks with ruffly the same space it looks like you can get more things in but maybe its my packing.
(Written by: socrates)