Rapunzel Organic Extra Dark 70% cocoa

Robust but not overpowering bitterness, resolving into a sweet citrus flavor. 7.4

http://www.rapunzel.com/

Feletti 1882 Cioccolato Fondente Ghanna 65% cacao

A nice, even cocoa flavor, warm and earthy. 7.1

Feletti Cioccolato Fondente Tanzania 75% cacao

This bar' s bitter start is supported quickly by citrus and cherry flavors. The after-taste is nice, with the fruity flavors winning over the bitter bite. 7.6

Feletti Cioccolato Fondente Ecuador 67% cacao.

Rich cocoa flavor, with some bitterness when chewed. The bitterness fades as the chocolate melts, leaving that same cocoa flavor as the dominant aftertaste. 6.4

Scharffen Berger Extra Dark 82% cacao

Sharply bitter, no nuance. Lingering, bitter after taste. Earthy flavors dominate. Probably best experienced with a Port. 6.2

Later update:

I did try this with a Port over the weekend -- it stood up to the rich flavor of that drink, but it did not enhance the experience as much as other fine chocolates have for me in the past.

Pacari Ecudorian Organic Raw 70% cacao

Very sharp and bitter initial taste. But this resolves into tangy flavors as the chocolate melts. There is a distinct cherry note that asserts itself as the bitterness tails off. This is an interesting and complex bar. 7.9

Galler Heritage 85 85% cocoa

Rich cocoa flavors. Some bitterness, but nicely balanced with the cocoa. No noticeable side flavors. 6.8