Matt,
I purchased a Tactical Tailor 3 day pack, since it was lighter. It is tough, but with such a big main compartment, everything can move to the bottom while hiking. I use stuff sacks of different colors to keep things sorted, and then tighten the pack compression straps to keep the stuff sacks from moving to the bottom. I do like the flexibility of changing outside pockets to modify the bag for the intended hike, commute, travel, etc.

Could you comment on how you obtained and purified your water while on your trek? I occasionally travel to less developed countries, so I am always trying to learn better ways to deal with the need for drinking water.

Spud