I'll add another vote for the 5.11 bags. I use the Rush 12 for 3-5 day trips to the smaller FOBs, and it holds much more than it should. The layout of the bag had some thought put into it and it makes very good use of the limited space. I pack a sleeping bag, fleece liner, pillow, long shirt, fleece cap, gloves, change of clothes, hygiene kit, FAK, tablet, sat phone, and a bladder in mine. There are some smaller items I probably missed, but it holds a lot for its size. Add a few Molle pouches and you increase the versatility of it. Durability id top notch. Mine is the multicam, but for those that think that's too mall ninja, there are other colors as well.