According to Lean It Up, and its review of 150 popular protein-powder blends, MRM 100 Percent All-Natural Whey is best. Its high-protein to calorie ratio offers 18 grams of protein per 85 calories. Plus, the MRM whey protein only costs 65 cents per serving which is a good value.
In its review, Lean It Up judged all of the competing protein blends on the basis of protein type, ingredients, sweetness, purity, key differentiators and price per serving. Flavor was not taken into account because it varies from person to person. The overall comparison established an ordered ranking, on the basis of best quality per dollar.