I would agree with Kixum, Amapi7 is very new and if you give it a try you may get frustrated and give up on it like I did. It has some serious stability issues, and until these are addressed I couldn't recommend it to you. That being said, I have never used Rhino so I don't know how they compare. I do know that Rhino is used on the professional level in The Industrial Design industry. If you are interested in Amapi7, wait for at least the first patch. regards, Paul