Samplers are a good idea. I like dark unsugary chocolates but not to the extent of the burnt-tasting 80% dark stuff from Lindt. Godiva is to die for. In local semi-organic crunchy granola-lite type grocery (local chain called Nugget Market) I found fairly good inexpensive stuff from Ritter and Perugina. Green and Black is a little harsh to my mouth, but at least it's fair trade stuff. (Child labor in the chocolate-growing business is no joke.) Theo and Dagoba are fair trade, okay in taste, but pricey.

An explanation, with a long list of companies if you scroll down. This is nice because it gives the source where it's grown, also!

http://vision.ucsd.edu/~kbranson/stopchocolateslavery/main.html