I am the same way. I use the old painter 12 and I use the same few brushes, pens, pastels etc. I keep seeing artrage and really want to try it. Have you tried it?

I saw someone post something they made with it and it look so like really dripping spraypaint and stucco. I am thinking of checking it out as I want to make a series of cool digital printmaking processes. Ive played with a few palette knives tryin to replicate the squigee I use in screen prininting.

This is a cool illustration by the way.