Wireframe. Most people prefer their pimps with the wireframe overlayed over the model, like this. Usually that's done by duplicating the mesh, scaling along the vertex normals (3ds MAX: Push modifier) and applying a wireframe material.
indeed. if you post wireframes alone, you usually cant make head or take of it, as you can only see the wires, and you see the front back and sides, so it looks kinda confusing sometims.