I'm not that familiar many eyeshadow primers, I've only used this one and one by bare minerals, which is really good and only use that one for special occasions. GB eyeshadow primer I use for everyday and it keeps up pretty well! Will be buying again!
Update 7.8.11 I've moved on from this stuff. I paid closer attention to my shadow and creased majorly.
This was put under foundation-primer, as shadow primer not listed.
This is a quality product, good texture, not too dark or too light.