Thank you so much to every one.
MoI is the best software, but it also as the best support and the best community.

I can't imagine big software company support, like autodesk, answering : "we tried the software xara3D" and give explanation about polygon and nurbs.

I tested Carrara text tool, which is very good, but haven't test "VUE" yet.

Thanks again to every one, I now just have to choose the best solution.