Urban Decay Deluxe Eyeshadow - Ruthless

because i don't like the cardboard packaging of their palettes, i never purchased Urban Decay eyeshadows. i even resisted the infamous Naked palette. but sometimes it's hard to, because believing all the reviews, the quality of the eyeshadows themselves is outstanding.
so this is my first time to try one - the Deluxe Eyeshadow line has really neat packaging, by the way.
i ordered this off of allcosmeticswholesale.com  two weeks ago, shipping was about 10 days, as always with ACW. i got it for 8.99$, plus 6$ for shipping.
Ruthless is a frost finish light taupey sand colour, the texture is very soft and creamy. the pigmentation level is quite high, also is the blendability.
the only problem with this is the staying power - i don't know why, but it creases on me. after a whole working day, it creases especially in my inner corners even though i used an eyelid primer (Urban Decay Primer Potion - one would suppose it would work with the own brand, isn't it?).
but i won't give up on this - it is such a nice easy-to-wear/daytime/all-over-colour.

compared to other sand-coloured eyeshadows:

 NARS Cairo - Urban Decay Ruthless - MAC Era

you see they are not comparable, even if they look very similar in the pan. the Urban Decay one is much lighter, more silvery/cool toned and shimmery than the other two.

do you have and like Urban Decay eyeshadows or palettes? do they crease on you? if not: what primer are you using with them?