Poser 7 promises to be much better for animation.  The way the recent announcements have been going, ti looks like they are really targetting the animation side of Poser 7.  New features like "layered animation" and lipsyncing show they are really putting a lot of effort into re-creating Poser as an animation tool instead of just still image tool.

If you have purchased Poser 6 in the last Month, contact E-Frontiers, I believe they will give you the upgrade to Poser 7.  I'm not guaranteeing it, but I remember reading that in a few forums.  Contact them and don't miss your chance.