This Stila contour shade is one of the darkest of all the products I tested, and the colour payoff is amazing. One or two swipes is all you need to sculpt your entire face. The highlight shade is also the perfect mix of gold and yellow for erasing under-eye bags. Since you won't have to use a lot, this product will last a long time, making it worth the cash.
Buy it: Stila Shape & Shade Custom Contour Duo in Deep ($40)