Ok I know that the Mac Make up brushes are very popular. I also own them. But let me tell you, the quality is no where near Estee Lauder's brushes. I mean for about the same price I can buy an essential Estee Lauder brush and it won't shed all over my face! I still own both, since Estee Lauder only makes a few brushes. But I recommend getting the foundation brush: 1F and the powder brush. I am crazy about the big fluffy powder brush, and their techniques and tips video is very insightful. I never knew how to perfectly set your make up with powder like that.
Brush and Video (click the Tips tab and then play!)
Credit: www.esteelauder.com
