I love this brush. It's great for highlighting and foundation application.
I LOVE LOVE LOVE this brush!!!! I'm very heavy handed when it comes to applying blushers and bronzers however this brush has made blush application a dream! It's especially great for heavily pigmented blushers (e.g NARS).
You can gradually build up cheek colour by stroking the fan brush numerous times or just achieve a 'fresh faced/natural' look with one or two sweeps of the fan brush.
In addition to blusher application, the MAC 184 is BRILLIANT for contouring cheeks! I Using this brush and Nars Irrestiblement bronzer enables me to contour my cheeks and have naturally defined cheeks as opposed to harsh lines across my face
This brush is definitely in my all time top 5 brushes!