Poser 5 is well worth buying. It is a much more powerful app than P4, and demands a bit more technical savvy as a result. The Material room and renderer are the best parts. Hair and cloth can be great but require a LOT of patience. As for the way P5 renders transmapped hair... Adjust the Shading rate and you can get good results from the troublesome wigs. Keep P4 installed though, to work around the occasional surviving bug.