I haven't used the P5 face room, the P5 hair eats up tons of memory, and I haven't messed with the dynamic cloth at all. But the P5 material room compared to the P4 material page is like graduating from highschool to college - when you look back, you will laugh at yourself for all the needless trouble you went through with that joke of a P4 material interface. I'd only buy ProPack if you want to plug into Cinema 4d or Lightwave or 3ds. Otherwise, like those that said it before, why bother? But then you're stuck with Poser 4's 256 file limit which will quickly start to drive you batty unless you wanna have files stored outside of your runtime. Poser 5 allows endless content by using multiple runtimes and/or subfolders. I heard a lot of people complain about P5 too and I held off on buying it. Now I wished I wouldn't have listened to them and gotten it a long time ago. The merchants were kind of hesitant on it too for a while, but now are releasing their goods to work well with P5 too. Even if you're a newbie, I'd say get P5, because even P4 users will have to learn the material room (and all the other rooms) basically from scratch and that's a very powerful element of P5. rammy