It all comes down to likes & dislikes and to if you can bring out the best or not. I do prefer Poser Pro's rendering engine. I'm used to it and after all these years of using Poser I'm starting to learn how to use it a lot better.

I don't get the same results in Carrara at all and personally I don't like the way the rendering engines renders. To get the results I do desire it takes me long time setting up the correct lights and still it's not what I do want.

Comparing galleries would be best, there you can see what each rendering engine is capable off and how the outcome could look.

Artwork and 3DToons items, create the perfect place for you toon and other figures!

http://www.renderosity.com/mod/bcs/index.php?vendor=23722

Due to the childish TOS changes, I'm not allowed to link to my other products outside of Rendo anymore :(

Food for thought.....
https://www.youtube.com/watch?v=pYZw0dfLmLk