I used this for a meal replacement shake, so i will be rating it on mixability, taste, and fill factor.
Taste 10/10: So far it seems almost impossible to go wrong in taste with Muscle Milk. I thought the fact that it was light might take a way from the original taste, however it didn't which makes me happy

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Mixability 10/10: No clumping what so ever mixed perfectly, however I did use a blender.
Fill Factor 7.5/10: Pretty good for 200 calories kept me ok four about 2.5hrs