The 224 brush because I can create a perfect, airbrushed-looking crease. It's fluffy and gradually tapered with a slightly pointed tip. The trick to using this brush, as the MA showed me, is to pick up the e/s only on the very end tip hairs, then apply the color using a windshield-wiper motion right above your natural crease. Tilting your head back helps, although some people like to look straight ahead into the mirror. Keep in mind that the spot you first place the brush will have the most color, so it's best to first set it right above the horizontal center of the crease. This is a must-have brush IMO. It's offical name is "224 Tapered Blending Brush." Retails for $28 USD