Polygon models are best for Poser, like Shonner's there. Poser needs quads or tris.
You also have to either bevel 'hard' (sharp) edges, or detach faces (break verts in UV mapper); else the autosmoothing will shade them to look like they are rounded. Poser 6 and after has a means to alter the smoothing; but earlier versions can't do that. Detached faces is a lot lower poly count; but the edges are razor sharp, bevels (or chamfers) give a nicer rounded edge that shows specularities better.

EDIT - bevels and chamfers give you more edge polys to work with for making 'dinged up' morph targets, or simply hard modeling the dings into the base model.

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