I really like
Organic Food Bars.... they have a "protein" variety that has 20grams. (and they are very low sugar)
BUT.... they are 320kcal (lots of nut fat), and the protein is rice. So they may or may not sound good to you, but if you're vegan, they rock.
On the other hand,
Clif Builder Bars are *mostly* organic, 270kcal w/20g protein, but 30g carbs (I think sugar is not real low).