I've tried so damn many, carnivore, gold standard, ON, six star, muscle milk ect. The best flavor wise I've had was carnivore double chocolate and muscle pharm cookies n cream.
No you don't just put them in then drink lol you mix in a blender and make a shake out of it.
My fav. Taste just like a banana cream pie to me.
Two scoops Walmart brand cookie n cream (taste pretty good)
2-4 Tb sp peanut butter
8oz unsweetened almond milk
1 frozen banana
1 cup Instant oats
Blend till smooth. It's pretty thick so add water till it's the thickness you want. I use a vitamix and it completely liquifies everything so no chunks floating around.