Got Paint Tool SAI. Tried painting and drawing a bit with it. It's quite simple and lacks any advanced image editing capabilities of Photoshop. The painting brushes though and simply amazing and the blending brush gives me pleasure. Airbrush is quite soft too but all brushes are maxed out at 500 pixels for some reason.

Anyways. Here is one little test painting with it.
Some liquify, contrast improvements and the clouds were done in Photoshop.
SAI can directly export a PSD file with all the layers and layer blending modes intact. Very nice.