Had my first try of using Sculptris the other day. I have used Zbrush before a couple of times, but have found Sculptris to be more intuitive - it seems to be much more adept and adding more polygons as necessary and exports really well to cinema 4d. This image is the same head, just retextured and repositioned in Cinema 4d. Ive needed a way of making more organic forms for a while - this is what I have been looking for. Oh and its FREE!