Sometimes you don't need a bag with myriad interior pockets — you just need a bag that will keep your stuff safe and dry. A bag like the Topo Klettersack ($140). Featuring a 1000d Cordura exterior in black, duck camo, olive, silver, or khaki, an inner compartment lined entirely in coated pack cloth, heavy-duty straps, an interior drawstring closure, a zippered top pocket, and military-spec hardware, it'll carry whatever you need like a champ.
Carry everything you need for the day, night, and afterwards with the Mission Workshop Sanction Rucksack ($180). Built with waterproof fabrics to military specifications, the Sanction offers multiple waterproof compartments, a large zippered pocket for your laptop or tablet, and internal frame sheet for extra support, and urethane coated zippers. Available in a range of subdued colors including black, olive, gray, and "charcoal."