Hello
I use Daz|Studio3, and I think it's wonderful. Creating a scene and posing is much much easier. Even though it misses the cloth-room and material setting from poser (such as overlaying images), the free version of daz is still something worth fiddling with. Daz does have dynamic clothing (but it doesn't support poser dynamics) and a plug-in for image layering (which is not free btw).
As it hasĀ been already said, daz's interface is much lighter and easier to learn than poser's. But here as well, it's a matter of taste.
All in all, Daz is a great alternative to Poser, though not as powerful as the latter, it still has its strong points. I use daz for everything from posing, creating a scene, rendering, basic texturing etc. Poser for the dynamics, material room, rigging and ocassional rendering (it does have good light system).