The Expert face brush is great for foudation and concealer. But the i tend to used the stippling brush to smooth out harsh line between my blush and contour. And i also have used it for contouring my cheek bones!
This brush is better for a more realistic effect. I feel the stippling brush is better when doing your makeup for photographs. It seems to apply more to the face. Most has to do with preference. I save the stippling brush for cream blush.