In the case of Poser Pro, most of the features were integrated into Poser 5 regular flavor.  At this point I can't afford $200 to upgrade, so I'll stick with Poser 7 for now and see what we get for Poser 8.  Other than the notorious POOF! to the desktop bug, I've really not had any real issues to speak of with P7.  I recently purchased Render Studio for Vue 6, so I'm more interested in rendering my scenes in Vue right now anyway.

BTW has there been any talk of a Poser 8 coming along?