I tried kumal and jewels. I think they are the ones made from cigar tobacco or something? They are really "goopy" and by goopy i mean the tobacco sticks to your bowl and cooks onto it.
Mixed berries was good (to me) banana was pretty decent, along with strawberry, and grape. Not sure about the others though, I can't remember anymore flavors off the top of my head.
Good luck with it though.
GLaDOS: "You euthanised your faithful companion cube more quickly than any test subject on record. Congratulations!"