I recently decided to bite the bullet and order a screen-in graphics tablet, and I blew through a grand to do so.
...and holy crap was it worth it. I've only been drawing with it for a few minutes, but it already makes all the difference. My hand-eye coordination was never good enough for me to make a standard tablet work, but being able to draw directly onto the screen itself was exactly what I needed.
I feel as though I am approaching my final form.