There is alot of high protein diets being suggested out on the nets lately, and in the media as well. For bodybuilders and athletes along with the average joe.
However, large quantities of protein is not necessary and oftentimes is just expensive. (the dangers of high protein have yet to be proven)
The ACSM (American College of Sports Medicine) recommends 15% protein, 20-30% fat and 55-65% carbs. This is for athletes and bodybuilders and is high end for the average joe. Many bodybuilders spout their literature from the overglorified suppliment comercials they call magazines and say you should eat 1.5-2 grams of protein per lb of mass. However this is not necessary or even benificial. .8g lb or 1.5-2 g/kilo is what is recommended by mainstream nutrition at this point.
I would stick to an organization that is on top of the latest research built for the growing and active athlete rather than a suppliment ad that recommends you eat 5lbs of their protein a day.
I would try the creatine/glutamine if you have the money to spend. It helped me, though only slightly, when I took it. I weighed cost vs effectivness and decided I would spend my money on more food instead.