I heard of this program called "Sculptris". It looks a ton like a freeware zbrush. Sculpt based modeling. Well I just found out about it so I don't know much but I did quick test and it DOES export to cinema 4d!
I'm tired as can be so I'm going to be but I will be playing with this software some more tomorrow if I have time. Check it out if you wish here.
http://www.drpetter.se/project_sculpt.html
P.S. I started learning to paint in artclass today. Very fun. ^__^