I received a miniature version (shorter handle) of this brush in one of macs holiday collection in 2010. I have never been a fan of the angled or flat eyeliner brush. It takes too much much time and practice to get the perfect line. This brush is so easy to use. You just dip the brush into your gel eyeliner (I alternate between mac fluid line and inglot amc liner), close your eye and draw a strait line. Because the brush is small and has a pointed top, its glides really easily with no interruptions. i recently thought i had lost the brush and went out and got the normal sized one from the mac store and found that it took a while to get used to it because the handle was so long but i still got that perfect line. I eventually found the mini version at the bottom of my makeup box and ended up giving the normal sized one to my sister.
A must buy if you struggle to use any other type of liner brush.