Poser4 and the ProPack is probably a better choice than Poser5. The extras in P5, if they worked as advertised, may make it a little more desirable, but you don't have the plugins and rendering speed of P4 & PP. Definately do not go with P5 unless you have a "top of the line" PC at your disposal. Take a look at DAZ's upcoming application before you make the decision.