I only own 2 NARS items, but I'll share what I think!
NARS Orgasm nail polish: LOVE this! I know there are a lot of reviews/dissenting opinions on how it doesn't look like the blush or whatever, but I find that I like it even better. It has coral/peach going on & it is a great color for those who are tanned.
NARS lipstick in Barbarella: this was a pricey purchase... considering the amount you get too, I think it's smaller than the average lipstick product. Tries my lips out if I don't wear lip balm underneath, but that might just be the fact that I tend to get dry lips anyways. Wasn't sure if the color was really noticeable, but I've come to love it. Really nice shade of coral.
NARS Orgasm blush
NARS lipstick in Dolce Vita
I'm totally loving NARS right now! In the last few months I've ended up getting all three Multiple tints, and I use Beverly Hills constantly. I also use Exhibit A with some frequency, which always surprises me because it's so loud in the pan. I love the Pure Matte lipsticks, and I think I've got all the colors at this point.
My current fave NARS luxury is the Bento Box. I ended up with two, since I bought an extra for a friend but decided against giving it. Kept it as a backup, and the rate at which I'm using the red, I think I'll run through it fairly quickly and be glad for the extra. And I adore the brush that comes with it. The brush is a beautiful object itself. As is the box and the cups, come to think on it.
And I'm in love with the Yachiyo and Botan brushes, which are in the same aesthetic as the Bento Box.