Hello S
pacecraftcreator, Rhino is indeed great modeling tool, I use it also, big fan, but I would not trash Blender so easily, espacialy if you are on budget. Blender is also capable of Nurbs modeling.
Polygons are not so bad as Zathros said, it is just requires different working style. (Technicaly, all nurbs surfaces in Rhino, are automaticly converted to polygons for display purposes, so you can see and manipulate them at reasonable speed

). Also, Maya, Blender, Cinema 4D etc. are not only for animation. They are powerful polygon modeling tools, and nowdays they also have nurbs functionality, as I wrote.
Rhino (and basicly all surface modlers) was invented for technical modeling, to design things that will be posibly made real, because surfaces are exactly defined in every point. So they have great tools for precise parametric modeling.
Polygon based modelers (Maya, Blender etc.) was invented to model 3d object that are not intended to be physicaly made and are used mainly in PC games and movie tricks, or rendered as 2d images. That is why they have also animation tools in themselfs.
Nowdays usage of this programs evolved and blends, and, like Zathros wrote, Rhino is used sucesfully in movie industry.