"Which version of Poser is best for rigging?" None. They all suck. But seriously, versions 5 and 7 have some differences but it equals out to the same nearly dysfunctional mess. Although Poser 5's joint editor is superior to Poser 7 (in my opinion)--mainly because you can see the falloff spheres through the model in outline mode and the inner and outer zones are bright red and green in wireframe--Poser 5's Setup Room has an infuriating bug that can make it impossible to name a bone. Overall, I would recommend Poser 7, but if you have an earlier version of Poser, hang onto it. It might be better in certain aspects of Setup. When in the Setup Room, save every time you do anything as separate files. You won’t regret it.

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