I have used Orgasm and Deep Throat and they are way over rated. I prefer Sin,Sertao,Mounia,Angekika,and I thik a great first buy would be a palette from Sephora, or a couple multiples.
The current Palette has a big mirror,four very wearable popular eye shadows,four of their most popular lipsticks, and 2 multiples.
The loose powder is also a great buy,its very wearable. It doesn't sit in wrinkles,its not heavy or shiny-its lovely!
NARS is very big on layering products-like a powder blush atop a cream blush or powder eyeshadow over a frosty creme eyshadow (increases color depth and wearing time). Like MAC,its all about experimentation and creativity.