I still kind of like living in a traditional looking house. Having twelve inch concrete walls will stop a 50 cal maching gun, and they make bullet proof windows that look and work like normal windows. Metal roof would help prevent a moltove cocktail from burning the place out too. The problem is if you look like you're living comfortably and safe, no matter how secure your place is it becomes a magnet for marauders. People can eventually find a way to take it, or destroy it. I think the camouflage idea is best. If no one knows there is something there they move on looking for the next target. The junk mobile home at the entrance is pretty smart.
I think my ultimate place would be one of the earthship homes that's built into a hill, and completely self sufficient with solar, hydro, ponds/streams, farm, gardens etc. I like the idea of being really far out so no one will even know to come looking for your place. Having a group of about 30 people living and working together on a homestead would be my ultimate prepping dream!