Whey vs Casein & sure it has been asked over and over

[SlimmerMe]

What is the real difference between whey protein shakes and casein?

And why would one prefer to take one over the other? Specifically....

[-KJ-]

Whey has a quicker absorption rate than casein thus entering the bloodstream quicker.
After a workout when the body is in need of nutrients and amino acids whey will be absorbed at a fast rate.
Before bed, the muscle will not need an immediate supply of aminos thus casein a slow absorbing protein will give a steady supply of aminos throughout the night.