The Solution
Legend
MPI is more "airy" and less dense. So fluffy and sweet and since it's the first ingredient with premium qualities...meaning there is a good amount of MPI, which cost much more to source.
Get your whey and Casein in one container, I feel the price is a steal for it's quality and diversity.
MPI Price per serving is also as expensive or close to WPI, and surpasses WPC. MPI is just a better blend (80% Casein and 20% Whey) which is shown superior post-workout than a basic WPC or WPI