I can't comment on Poser 5...I jumped in on Poser 6 when I started, but, in the 8 months I've used it, the only problem I run into is when I try and render a massive pic that either the computer can't handle or Poser can't handle.  It's an easy fix by just tweeking the numbers, but, it's a stable system for me otherwise and have had no crashes or hangs.  Still cuss a blue streak with the cloth and hair room, I just can't understand how it works yet, but, that just me. Hell, I'm still trying to figure out how to paint with hair brushes in Photoshop!  LOL 

If it's not a major issue or unless you need a little more punch in your projects, From what I've read on different forums, Poser 7 is supposed to be on the horizon and coming our way fast...you might want to wait and make a jump over P6. (I listen to rumors all the time, so, take that with a grain of salt.  P7 could be well over a year away for all anyone knows. :crying: )