The size has nothing to do with the type of postwork you can do.. the size you get is mostly determined by your drawing style, your monitor size (and working window area), how much room you have on your desk, etc. I have a big monitor and worked with pencil on 18x24 Bristol Board, so I am used to a large drawing area and making big strokes.. hence, in retrospect, I should have purchased a larger tablet. The main thing to be concerned about is pressure sensitivity. The Graphires have 512 levels of pressure and the Intuos have 1024 levels of pressure. Size has nothing to do with pressure sensitivity--it's based on the type of tablet/pen you get. Intuos also have a transparent overlay for those who like to trace, but I never use that feature.. I scan my work and trace that way, using layers. I recommend a 6x8 Intuos, or, if that's too expensive, a 4x5 Intuos, just for the improved pressure sensitivity.