I use it for filling in my brows and it's great at the job. You couldn't really ask for better quality!! I doubt you'd find a brush much better.
Most of my brushes are from The Body Shop, and they're good but still on the expensive side! I was going to invest in an angled brush from MAC or Clinique, but it's just soo expensive... Why pay so much when ELF has this great brush for a fraction of the price!
And, heaven forbid, it breaks- well it's cheap to replace :D