I like the lips in the firefly render better myself, but i think that's a personal taste thing.

I strongly suggest starting with the material room.. for Poser 5, I think learning the materials is key, just as learning lighting was key for Poser 4.

As for tweaking clothes and such.. I have been trying to come up with a formula to "fix" these MAT settings in Poser 5. For example, the things I go through to "fix" items that use reflection maps are different from the things I go through to "fix" items that are just normally textured.

For example, I found that Ravnheart's MATs for the Gothic armor don't render properly in Poser 5. To make it work I believe I changed the diffuse color and added a reflection map (spherized). Once I have a better idea on what I am doing I will write up some procedures I am using to get some of the clothing to render better in Poser 5.