I have both but I won't be able to really enjoy Poser Pro 2010 until I upgrade my computer.  I've tried the Poser Pro 2010 on a new computer and that computer was rendering images faster than I wanted it to.   I click on render and I thought I had a few minutes to do something else but it rendered so fast that I don't have time to get a glass of water. 

Was it cool? yeah but I'll have to give up my habit of multitasking while working with Poser Pro 2010.  So I'm really looking forward to getting a better computer.