This came up in a private conversation but I felt some of it merited a public post.
Final Quality Renderworks is NOT what I would consider Final. It's name is a holdover from a previous rendering engine and leads a lot of users to think that if they slap that FQRW button, they'll get the best rendering possible, I hope to get this renamed soon. This perception can also be colored by how nice OpenGL can be made to look these days, as it has advanced considerably since 2010.
Below is a brief
This is my typicall workflow when creating renderings.
For showing quick previews when someone is looking over my shoulder and asking questions > Fast Renderworks
For middle of the road and while having my daily coffee > Custom Renderworks, adjust quality as needed
For those almost there moments and fine light tunning > Always Renderstyles + adjust sheet resolution as needed ( 25dpi, 72dpi, 150dpi, 300dpi, 600dpi)