The current state of the market has no shortage of third party renderers for Cinema 4d. There are some great ones to choose from, including V-Ray, Octane, Arnold, and Maxwell renderer.
On the past Mograph Plus’ Kamel Khezri has offered some great resources into using V-Ray for C4D. Recently, Kamel as posted a look at getting started with Maxwell Renderer.
This is a section of his training series which offers a Comprehensive introduction to MAXWELL RENDER for Cinema 4d. Kamel shows how to create realistic looking plastic materials with Maxwell. It is interesting to see how the rendering engines vary with integration and material creation.
Check out the Comprehensive introduction to MAXWELL RENDER for Cinema 4d here.