I'm not really a chocolate snob. Or at least I wasn't.
I used to love white chocolate and milk chocolate, but now that I eat a very clean diet I can't even imagine eating that amount of sugar. So I eat a chunk or two of very dark chocolate every day.
Cacao is actually very good for you, so dark chocolate is a pretty decent snack. I think that each chunk of this stuff has less than a gram of sugar in it. The rest is cacao.
Anyway, I've tried a bunch of these and the Dolfin is my favorite. It is super smooth and has very little bitter aftertaste. To eat the chocolate you break off a small chunk (which gets bigger as you get used to it...) and let it melt in your mouth.
The flavor is amazing. It's far more interesting than the simple flavor of milk chocolate which is essentially sugar with some cacao mixed in. Try a bar and you'll probably be hooked.
Other good ones:
The Lindt was surprisingly good. I also tried a 100% baker's chocolate and it was totally disgusting. It wouldn't melt in my mouth and when I bit it it was overpoweringly bitter.