I have a great love of Nars eyeshadow duos. They have both basics (Madrague, Portobello) and bonkers yet inspired colour combinations (Nouveau Monde, Grand Palais).
Kalahari and Cordura are both great for brown smokey eyes, and compliment each other well.
Kauai is gorgeous gold and purple with an amazingly soft texture.
Nars eyeshadow duos are a must have in my opinion! They come in incredible colours and have great colour pay off. They are also long lasting.
These eye shadows are silky and I never get fall-out from the shimmery colours. The eyeshadows also blend easily and can be built up well to achieve the pigmentation you want!
A little pricey, but considering you get 2 high end eyeshadows for this price, its well worth it! Also has sleek packaging with a mirror in the compact which is always handy!
Tips: I love to spray Mac fix+ onto my brush before applying the eyeshadow to get a more metallic/pigmented look!