Opinions on a 3D rendering environment for a project?

I have a term project coming up in grad school for a simple 3D image render (an intro to graphics class) and I was wondering if there are any opinions out there one which free 3D environment might be the best to use? I know this is a subjective question, but I want to hear people's opinions.

Some of the ones recommended in class were Rhino3D, Google SketchUp, trueSpace and Blender - we are not limited to just these.

Thank you for 开发者_Go百科your input.

Went with SketchUp, it worked fantastically!