What type of chocolate is it? Personally, I've found Michel Clouzot's (sp?) 99% too bitter for my taste -- but I love their 85%. On the other hand, Domori's 100% is smooth and silky and very edible. I also had some English 99% chocolate (sent to me by a friend, unfortunately I can't remember the brand name, only that it was Chocolatier to the Queen) that was perfectly wonderful.

With most brands, I tend to prefer around 85%, but there are a few 99% - 100%s out there that I really enjoy.