Can't bear to leave anything behind, even on a weekend trip? This sleek pack has the biggest capacity of the bunch, with a suspension that can handle 40-plus pounds and a height that didn't cause instability when I hiked Colorado's steep Liberty Bell Trail. The pack is on the heavy side but includes a rain cover and plentiful lashing options. 3,960 cu in, 5.2 lbs; www.libertymtn.com
Bonus: The adjust-on-the-go Tergolight harness lets you micromanage fit on the fly.Bummer: The mesh side pockets are too small.