Originally Posted by Mercuric Mind
My belief is that the heavier duty chassis will be more road worthy than a van chassis once it is fully loaded up with stuff.
I would think so too. Or at least more robust.
On the flip side, the heavier duty/stiffer springs, heavier weight, etc might not perform as well off road. But I suppose it depends on the type of 4x4 driving you intend to do.