Keeping in mind that I have started using P5 more than P4 lately, after about 6 months of looking at it with disgust... Biggest drawbacks to P5: don't try to work at 800x600; my default display is 800x600 and P5 just won't do it, making it neccesary to switch to 1024x768 whenever I want to use it. I hate the pose dials, which float. if there was a way to make them NOT float, I would do it; but in order to see everything on my screen, i'm constantly moving the dang thing around. it's more of a resource hog; if you have less than 512MB of ram, you are going to be hating life. works good with a gig of ram, though. I think the material room is slightly too complex for most use; I wouldn't want to dumb it down, but perhaps having a "use poser 4 type material only" option would be nice? Forget about rendering straight to video when using the firefly engine; perhaps someone can do it, but most of the posts I've seen say otherwise. works fine if you render to images and then stitch. Dynamic hair still goes through the face of the figure about half the time. those are just the drawbacks as I see them; dynamic cloth makes it worthwhile, in my opinion. 1 outfit can fit ANYTHING.