Most Versatile: Luna Bars

Our top flavor pick: Lemon Zest 

Bar Stats: 180 calories, 9g protein, 3g fiber, 13g sugar, 5g fat (2.5g saturated)

Pros: Offers a nice balance of the nutrient "Big 3"—protein, fat, carb—in a sweet, almost candy-like, bar. With almost 10 grams of protein, the bars can double as appetite quenching snacks or a post workout protein boost. Sugar is about three teaspoons; lower would be nicer, but this is about average since sugars make bars taste good. (A Snicker's candy bar has 29 grams sugar.) Other pluses: Bars are made with 70% organic ingredients and are newly fortified with Vitamin D.

Cons: Geared just to women.