Fruition is my entry recommendation. Every bar they make is good. Then Castronova, Goodnow Farms, Askinosie, Soma, and Dick Taylor. A good heuristic for evaluating a new brand is if the package tells you where the beans are from and if the ingredients list is “cocoa beans, sugar”.
EDIT: I realize you asked about bars not brands, but I’m in transit and brands was easier than individual bars. I’m a huge fan of the Askinosie orange bar in particular.
EDIT: I realize you asked about bars not brands, but I’m in transit and brands was easier than individual bars. I’m a huge fan of the Askinosie orange bar in particular.