Not only are the brushes far more customizable, they emulate the way brushes would behave in real life far better.
Who should use Painter 2020: If you're familiar with digital painting in Photoshop, Painter 2020 emulates that feeling, but produces far better results. Not only are the brushes far more customizable, they emulate the way brushes would behave in real life far better. Painter's price puts it higher up into the professional artist range though.