Max is good to render those IGES from Rhino or SolidWorks, but it would be better to equip with Final Render or Mental Ray to achieve Radiosity, Caustic Effect and DOF..
Max is user friendly, but the NURBS modellers is useless to me as it is not user-friendly. My work flow is Rhino/SolidWorks, then output to Max for Rendering, whether animation or still picture. Note, better to equip something like Texporter!