Does anyone use these supplements?
Are they any good? Tasty? It's strongly associated with crossfit and I'm not sure if it's a pro or a con 
Not even the Crossfit people I know use that stuff.
It just high priced protein and "recovery" marketed to Crossfitters that think it will make them Chris Spealler. There are tons of other supplements. Save some money, eat right, train hard and sleep well.