So first of all, I never had understood the hype around brushes - I believed that the product you are applying is much more important than the one you are applying with. I was so wrong. These are like a babys bottom. Smooth, soft, and they are just everything I ever wanted. F40 - I can't stop using this ever since. It just makes my bronzer application so much better than anothing before. F35 - this is probably my favorite of all of them, best highlighter brush of my life. It just applying the highlight perfectly. E55 - probably the brush that I am the least excited about within this collection, it is good, but I mainly only use for smudging. E15 - I know that people love to use this for carving out the brows, for me placing the darker shadows just on the lashline. Both bottom and top. E25 - using it to deepen out the outer corner, just pics up the product ever so beautiful, and for some reason with this brush there isn't so much fall out compared to other ones. Not sure why, but that is what I noticed. Overall love them, and they have this slightly glittery handle as a bonus... I just love them. I will probably order more Sigma brushes after this one.