A good friend gave me her old iPad to try out and it's been going really well! I have a nice drawing tablet, but it's a pain to set up on my desk, not very flexible, and tethered to my desktop. This feels much closer to drawing in a sketchbook or inking on paper. Obviously I'll need a lot more practice to develop a way of painting that works for me, but we'll get there!
(Also watch Fantasmas, it's a great show)