Depends what you want to do. And how much you want to spend. Rhino I feel is drastically overpriced. Very good package, but overpriced. Would be nice if they had a cheaper, stripped down version. Carrara and Rhino are two different packages, Carrara is the do anything package, you can animate everything, you have physic simulation, bone deformations, and more. As well as the GI renderer, and Amapi for the NURBS modeling. While Rhino is a NURBS modeler and really thats about it. Brian