Try out the evaluation v.4..   Rhino is a very logical and it has an easy learning curve...   yes,  it is expensive but get over it...   One bad and terrible thing about Rhino (besides the cost,, my God) is that you'll inherit a bunch of people that will attack you in the jugular vein at the mere mention of NURBs..

I just mentioned it... OH no..    so take cover....  hurry! 

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