It doesn't look like it does animation, which was a concern for me. I think it was stewer who said that a rendering engine only translates your settings into a bitmap, and went on to describe that increasing light intensity to 160 improves Poser's image quality (which it does). The point being that it may not be necessary to go to Maya unless you need something Maya (mental ray) specific, like caustics for example.

That said, while not trying to sound snobbish, you would be doing yourself a great disservice by not fully exploring Maya's capabilities. I've been studying it for over a year and constantly amazed by what it does.

I have also invested a great deal in Poser content, which is why I use Trinity for Maya (www.rendermagix.com, which is free BTW). It's a great way to ease the transition from Poser to Maya.