MAC offers an insanely large amount of, well, everything. They have a bunch of blushes to choose from. What I love about their powder blushes is that they're categorized according to finish: frost, matte, satin, sheer tone. You know exactly what you're getting even if you're not able to swatch the product in person. I admit that I don't own very many MAC blushes, I have five at most. So far I've had great luck with their quality but I must say that the shade Peachykeen has been my least favorite.
Peachykeen is a shimmery peachy pink. The shimmers are fine and gold colored. It's not the type of shimmer that disappears on the face, it's definitely noticeable (even when you're not in direct sunlight) so matte lovers beware. However, it is by no means glittery or chunky. The finish is labeled as Sheertone Shimmer.
Peachykeen is very nicely pigmented. I find it more pigmented than its close sister NARS Orgasm Blush. Orgasm and Peachykeen are extremely similar. On the first image (the swatch at the top) Orgasm is on the left and Peachykeen is on the right. They basically look the same, except Peachykeen is more potent (more pigmented).
The texture is soft but there's something about it I don't like. The longevity is average to good. However for some reason it goes on patchy. It's not as bad over foundation but on a bare face it doesn't look as good as I'd like. I haven't had this problem with many other blushes so I can't put my finger on it.
On my lips: Revlon Plum Velour lipstick
Overall: It's a gorgeous color, but very common. I'd say skip and go for theBalm Hot Mama or NARS Orgasm. I have a post comparing those two here in case you're interested.