The Quest Protein Bar is higher in protein (21g) and dietary fiber (12g), making it ideal for muscle recovery and keeping you fuller for longer. It also has only 1g of sugar and no added sugars, which is beneficial for those avoiding sugar, though it’s higher in calories (190 kcal). On the other hand, the Fitbar Protein Bar is much lower in calories (90 kcal) and fat, making it better suited for those watching their calorie intake, but it has significantly less protein (3g) and fiber. Fitbar also provides vitamins A and C, which the Quest bar lacks. Overall, the Quest Protein Bar is better for active individuals seeking high protein and fiber, while Fitbar is a lighter option for those focusing on lower calorie and fat consumption.