Raw cacao is the worst. I LOVE the taste, but if I eat beyond a small amount, I feel nauseous and dizzy. The darker it is, the worse this effect is. This doesn't seem to happen if I stick to modest amounts of non-raw dark chocolate, however.
Some of the best chocolates I've had:
Amano (
https://www.amanochocolate.com/dark-chocolate)
Taza (
Stone Ground Bars | taza chocolate store)
Madécasse (
Madécasse Chocolate | Madagascar Chocolate)
Vosges (
Vosges Gourmet Chocolate Exotic Candy Bars, Mix 'n' Match, Mo's Dark and Milk Bacon, Barcelona, Naga, Amalfi, Red Fire)
Out of all of these, the Taza 87% dark Bolivian chocolate is probably my favorite. Because it's stone ground, there's a grit to it, and it's got a very unique, fruity flavor. It's pretty expensive ($10 a bar at Whole Foods), but it's worth it.