The Koala is one I considered. It was actually designed for Kifaru by the guys that run Hill People Gear. Ultimately I decided against the Kifaru because of the added bulk and expense. It's considerably larger than the Kit Bag; that would be a bonus if you want to carry a lot of stuff, but I wanted a very minimalist setup to carry a sidearm, spare mag, flashlight and my ID and keys. And the Kifaru is a bit more expensive, too. Realistically the Koala Lite is closer to the Runners Kit Bag with the full Kit Bag being a little closer to the regular Koala. But Kifaru makes awesome stuff, and if you want something of that size it's almost certainly a great option.