I’m not very adventurous when it comes to digital brushes, and prefer to stick with one brush from the beginning to end of the drawing process. I find that switching brushes during the drawing process can really take me out of my drawing flow. I put together a free Photoshop brush set, which consists of some standard Photoshop brushes as well as a few brushes from other artists’ brushsets. You can download it from this page. As for Procreate brushes, my preferred brush sets are MaxPacks Gouache and RazumInc pro II.