This. As an artist, I found Gimp too precise in its pixel-drawing. You want a dot, you get exactly that. Krita, however, uses an algorithm that smooths its brush edges so that the result - even after holding the brush in one spot for awhile - doesn't come out pixelated. I use Gimp for general editing, and particularly filters and such (e.g. liquid rescale (seam-carving)) - which is what it seems to be best at anyways.