I'm not sure I made this clear - both sets of renders are using Poser 5, one set uses the "P4 render engine" while the other uses the "Firefly render engine." I installed P5 over P4 so I couldn't try any of these with P4 - not that the hair would work, anyway. I suspect that the "P4 render engine" is at least as fast or faster than the true Poser 4 render engine. I really like how the dragons come out with the "P4" render engine - just over 11 minutes for 4 fully textured dragons!