I WOULD GO WITH AN INDUSTRY STD. Which is solidworks. (small to medium
company). Go to solidworks site for equipment requirements. The main
Consideration is the video card.  You will also find more people
Who are literate in solidworks, who can help you along. Rhino is
A nurb system. It is designed to generate video game characters
And pretty stuff. You need an engineering system (good solid numbers).

Benito Luna