Poser 4 in general: fast rendering, and the ability to do a lot of renders with different styles and lighting when experimenting with scene setup, or doing layering for a print image. P4 over P3... conforming clothing, and transmapping, mostly. As far as I recall anyway. I didn't experiment with 3 much except for th freebie magazine versions. I went straight from Poser 2 to Poser 4.

"I am a good person now and it feels... well, pretty much the same as I felt before (except that the headaches have gone away now that I'm not wearing control top pantyhose on my head anymore)"

• Monkeysmell