My workhorse is Poser 11. I still use a lot of Python scripts that don't work in Poser 12. I hate Superfly, so the main advantage of Poser 12, faster Superfly rendering, isn't something that matters to me.

I own Poser 12, but rarely use it. I plan to buy Poser 13, just to support Poser development. I probably won't use it, either, unless there's something game-changing in it that has not been signaled so far.