Thanks for the feedback everyone.

My motivation was one part being able to have more control over freehand line drawing and another part more versatility with PS smart brushes. For example (i'm not sure what the exact term is) but using the pen pressure to change the direction of a brush stroke on the fly. There is an example on the boards I couldn't find with footprints following a line.

So if i were to get a tablet, I think Wacom is the way to go. Graphite also seems like a good idea. Anything else I'm missing?