I just recently started dabbling with highlighters, so I'm no expert. I've tried Etude House & MAC in the past, but when I came across The Balm's Mary-Lou Manizer ($24) on a beauty blog I was immediately smitten with it. It seemed "richer" and more "polished" than the others I've tried.
My skin has made vast improvements over the years, by using better skincare products. My "without" picture looks really good, but this champagne gold highlighter gives my skin a really nice glow over my makeup. I love the results and would highly recommend it. I also love the packaging. It comes in a round mirrored compact. The compact is very lightweight (think plastic, but it doesn't look cheap).
foundation: urban decay naked skin #6 / concealer: benefit boi-ing #3 / lipstick: marc jacobs neo-noir lip gel
highlighter: the balm cosmetics mary-lou manizer on cheeks and nose
supersweet(run & buy it) sweet(really good,buy it) bittersweet(ok, issues)not sweet(not good,don't buy this stuff)
The Balm Cosmetics Mary-Lou Manizer Highlighter Luminizer is Sweet