your pics are cool, hard to say and not easy to comment pics from other people (with my pics I am very very critic sometimes )
For my taste maybe the "Paradise Pool" is the best: I mean, is simple, colors are ok and DOF is doing a good work. pose nice (model no need to say is great), the other have some great high but also some "lows" concerning pose or different artifact (strange light , unnatural poses or simply the room hat bad meshes).
This game has some (big) limit, very oft it's almost impossible to get a "good good" pic (unless you are @Kraegar )
Like you wrote you are trying to experiment something new, and this is great, the more you get something "strange" but the quality of your pic will improve.
Look at my JV series if you see the difference between the first pic JV001 and the last ones... I think there is a little evolution -or maybe not , they are all lame -
Damn I don't wanted to speak about me, so go on with new pics!