luckyjoe
Adventurer
http://www.frontrunneroutfitters.co...bags/front-runner-wolf-pack.html#.UwYTJXi9LCQ
These may be a good option for you, price point isn't too bad, stackable!
Wolf pack boxes are great for stand-alone storage - sturdy, light, stackable. For dense storage, like tools, this is about as large as I like to go.
Tom P.