I think it is not the objective amount of post work that decides where the picture is to be put. For me, this is more a question of where my heart is with an image. As long as it is post work in the meaning the term suggests - I enhance the elements of a Vue picture where I or Vue were not able to satisfy my vision of the piece - it will always be a Vue picture. But the other way around - I create a Vue render as a basis to do all the wonderful things in a paint program I'm perhaps not able to do from scratch, so that this is more like "painting by numbers" - I think I would feel about it as a 2D painting. And I guess that also influences the decision with which community I want to share it - perhaps the ones I think will be able to best value the effort and talent I invested in my artwork.