Protein shakes

[bloc]

http://www.energyfirst.com/s.nl/c.323052/sc.2/category.2/it.A/id.82/.f

http://www.t-nation.com/readTopic.do;jsessionid=42273F8096E77A09E24795DB73CC3807.hydra?id=459252

I was thiking about buy once of these for 2 reasons. 1. Fat loss 2. Muscle gain
I was wondering, how much of an impact do these shakes have, and what kind is the best to buy?
Also, do you think it's a good idea to take L-Glutamine along with a protein shake for fat loss + muscle gain?

 

[abear]

the purpose of protein powders is to add more protein to the meal plan or to use when solid food isnt an option at a certain time. results will be based on total efforst over just a powder. personally i wouldnt pay 40 dollars for two pounds of whey isolate when we can get 5lbs of a concentrate/isolate blend for 25 dollars.

as for glutamine, its proven for the immune system and for digestive health and not proven for muscle performance.