I tried Krita. It's not not as good as GIMP is. What I will say is, it is pretty good for what it is and offers stuff that GIMP does not have. In fact I wanted to switch multiple times because of the support for Vector layers and non destructive workflows. But I never liked editing or creating images with it. Their text tool is also terrible (or was, I don't know the current state). Just not a good GIMP replacement for me.