Canoeboy, what a 3-D Leafy suit does is it will break up your outline better than regular camo can, whether you are in a treestand or stalk hunting. Many people argue that regular camo works fine, but those in favor of 3-D Leafy suits seem to find that they tend to break up your outline which is also a critical part of hunting whitetail.

Personally, I do not own a set of 3-D camo, but it is something I am looking into getting. Especially now that I getting into archery hunting.