If you can't afford ZBrush, but BlackSmith3D is too limited for you, then I'd say try 3DCoat, it's pretty awesome. Close to Zbrush, yet not as expensive.

When I used it, I had no problem creating detailed textures for Poser figures and props with 3DCoat. I stopped creating items for Poser, so I sold my 3DCoat license, but I often regret having done so :(

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