Thanks for all the advice!

I'd heard about subdivisions in Poser which I assumed was how one swapped in higher polygon assets but I wasn't sure how to make use of them.

Out of curiosity, which program have you found easier to use? I don't know if DAZ's UI just seems a lot more cumbersome because there's more on screen or if it's actually a more complex program. I'm not a 3D modeler so ease of use is important to me, especially because I'll be doing a lot of photoshop/illustrator work on the art after I've rendered.