Peter, I am not the best for explaining different nuances of flavor, I just know what I like so with that in mind, I thought the Bisirri was a little richer and perhaps a tad sweeter than the Dark Portuguese, which was richer than the LSU Gold which was very sweet but maybe a little less figgy. Sorry that's the best I can do. I am much impressed with those who can detect strawberry or melon or some other such fruity taste and describe it so eloquently, guess they have a much more refined set of taste buds.