Dynamo, currently I do  all of my modeling in Carrara 5 Pro, mostly in the vertex room. I used Hexagon for it's organics uv mapping tools, but have recently switched to "Roadkill" a free program. I've also used Silo but prefer Carrara's intrface. IMHO Carrara's biggest disapontment compared to other modeling software on the market ro day is it's very crude (comapratively) Organics UV mapping tools, but "RoadKill" is free, available and easy to use for organics

hope this helps