I have all of the brushes in this set, and as with other elf brushes, these brushes can be hit or miss. Sometimes elf brushes are non-scratchy and irritating, other times they are. I would recommend going to a physical store and trying out the brushes before buying. Other than that, this set is a great deal. The angled eyeliner brush is great for brows and eyeliner, the bent liner brush is great for applying gel liner (though the line is not super thin) and the smudge brush is great for applying eyeliner in a very thin line. (it does work for smudging eyeshadow too, but it's better as an eyeliner brush.) I have had the angled eyeliner brush come apart before, so again, quality control is an issue, but it can be fixed easily.
I found the e.l.f. Define Your Eye Brush Kits on sale after the Holidays at my local Real Canadian Superstore of all places! They were on clearance for $2 a box - so I had to buy three - lol! One for me and one for each of my girls! They are not high quality of course but are great for extra brushes for shades you don't use everyday or as spares for sure! Each kit contains a Small Angled Brush, a Small Smudge Brush and an Angled Eyeliner Brush.
These reviews are the subjective opinions of ChickAdvisor members and not of ChickAdvisor Inc.