If you want to keep StyleColours with ObjectNames then OBJ is the way to go. KeyShot can and does handle Billions of triangles very well, so you don't need to worry too much about the mesh densities generated. Personally the setting i find works best to go to other OBJ editing tools are Angle 40, divide all larger than 5, scale to 0.1 - That works well going into Zbrush and Modo and Cheetah on the Mac to be subdivided and to sculpt textured objects for creating render maps such as normals and specularity etc.

If you are doing models that are paint, plastic, glass you're ready to go into KS. Remember when importing into KS that you need to set the Z is up option and to set your units in the Size section of the importer.

This way you get two options for optimal export.

1. Develop a colour - material type regime which has been adopted by many over the years - e.g. Cyan = Clear Glass
2. Use object names that describe the object and material in one - e.g. DoorHandle_BrushedAluminium

Don't use punctuation or special characters in naming conventions. If you need a space use an underscore ... It's the safest way

Martin Spencer-Ford