I appreciate all the responses. It has been very helpful. Thanks Eric, (I like the name Audity.) Part of the reason for thinking about Vue was the rendering engine. I have Bryce but as you know it's not very versatile (sp). I downloaded the Vue demo did a quick render with just sky and terrain and it took a long time. You answered the main questions I had. Thanks. Bill Aka Manikin Flesh Serving humanity in a barely discernable fashion.