Their kits are really well thought out and use some pretty good quality components. I have been buddies with the owner since he started the company and he has constantly been improving the products, refining the kits, and listening to customer feedback.
I personally took some empty pods and built my own kit, but that is because I like to tinker. I will sit in front of the TV at night and swap components in and out. A lot of my parts did come from a premade Wilderness kit though, since like Mist said, buying the kit is a heck of a lot cheaper than sourcing the components.
I have a large Pod that always goes with me, and a few other pods that have specialized kits like a more comprehensive first aid kit, a fire kit, and some other stuff. I love the modularity. It seems like a small feature, but being able to open both ends of a pod is amazing. That feature really allows a lot of flexiblity in packing your kit and you never have to dig through to find anything since you can make sure every item is accessible from one end or the other.