Slate Milk Chocolate Ultra 42g High Protein Milk Shake vs Quest Nutrition Protein Shake

Both are ready-to-drink milk-protein shakes with no added sugar, but they aim at different jobs. Slate Ultra packs 42g of protein into 190 calories with zero added sugar and no carrageenan or acesulfame potassium, and its 4.9 rating across 1,100 reviews points to strong satisfaction on taste and texture. Quest delivers 45g of protein per 325mL bottle and is certified gluten-free and kosher, but reviewers split on value and report a sweetener aftertaste and occasional curdled texture. Choose Slate for the leaner macro profile and cleaner ingredient list; choose Quest if you want the higher protein dose and gluten-free certification.

• Choose the Slate Ultra if you want the most protein per calorie with a short, additive-free ingredient list and a milkshake-like chocolate taste.
• Choose the Quest shake if you want the highest protein per bottle, gluten-free and kosher certification, and a creamy shake you can use as a snack or meal replacement.