After our analysis, we came to the conclusion. Optimum Nutrition Whey & Oats takes first place in this battle and earns 5.2 VSR. Its rival 21st Century Whey Protein gains 7.6 VSR. The gap in rating was affected in the first place by the price, the cost of 25 grams of pure protein of Optimum Nutrition Whey & Oats is $ 1.41 as against $ 0.94 of 21st Century Whey Protein. One serving of Optimum Nutrition Whey & Oats contains 27 grams protein as against 20 grams of 21st Century Whey Protein. At the same time, a serving of Optimum Nutrition Whey & Oats costs $ 1.52, and a serving of 21st Century Whey Protein costs $ 0.75.
The Optimum Nutrition Whey & Oats composition contains minerals in an amount of 4 as against 8 in 21st Century Whey Protein.
Optimum Nutrition Whey & Oats has just one flavour, Chocolate Glazed Donut. 21st Century Whey Protein is produced in 3 flavors.
Optimum Nutrition Whey & Oats has just one size, 1.54 lb. 21st Century Whey Protein is available in 3 sizes.
We recommend buying 21st Century Whey Protein.