I'm a big Mary Kay fan, I've been hooked on their products since I was a teen (my mom was a consultant, so she ordered my make up for me). So I've been on the band wagon long enough to acquire quite a few mineral eye shadows. I really love using these shadows because they apply evenly and they don't smudge - I've also found that Mary Kay does a great job pairing colours in their dual colour shadow swatches! Some of my favourites are the purple and greens!

I'm converted, I have to say. I was a big Lancome eye shadow person before I tried the Mary Kay Mineral Eye Colours. MK ones are way less expensive ($7.50 each in Canada, not sure the US prices). They are long-lasting and don't crease on my eyes after hours of wear. I love the new colours that came out in 2010 too - lots more iridescent shades, comparable to what Lancome or MAC offers. These colours have great pigmentation, so they can look as intense as you want, with little fading over the course of the day. (using the MK Eye Primer underneath also helps with that, but that's a different review).
My favourites right now are Crystalline, Granite, Black Pearl and Sweet Plum. I can do a fabulous smokey eye easily with these. Highly recommended.

Great eyeshadow - goes on smooth - new case is great