Here is another conversion i just did. the lo res mesh is all quad. But there is an obvious problem wherever the edges form poles. You can see it very noticably on his belly, and there are a few poles on the top of his head, and also one between the legs where his "unmentionables" should be (if only i were so generous when i made him
). I am sure this could be eliminated if i rework the mesh so all the poles are in the hidden areas. Or after the fact i could remove the bad area, and use a nurbs patch or network surface to repair it... If you have a particular mesh you would like to use as an example, post it. i'll convert it to 3DM and post the file so you can inspect the results for yourself...