The company that pulled me away from Poser has become the company that is driving me quickly back to it so:

What's the learning curve since poser 4, because thats where I left off?

How well will my exisiting runtime from DS3 Advanced work or not work, and I'm specifically speaking of my "runtime" runtime not my "content" runtime.

How well does the PoserLux plugin work and will it work with P9 or P2012? I think I'm leaning towards 2012. Compaired to Reality how good or bad as this thing?

How stable is Poser? I like to build large, sometimes epic scenes and I have a fairly powerful Windows 7 box with 4 cores and 12GB RAM.

If I thought Daz was seriously focused on DS4 I'd stay, but I don't get that feeling.