I wonder how many people use wet brush in their work? Considered how powerful the basic brush is with all blending options, I didn't find much use for the special "wet brush". Just try Kyle's watercolor brushes with "overlay" (or soft light, or else) in settings and compare. I've created a number of favs for those. You can get a true aquarelle feeling. To say nothing about turning "wet" option on in brush edit mode.