I fancy sticking my oar in.
Here the back of my baseball card: In 2 years (on/off supplements) i lost 2 stone, 10% body fat and then put on 4 kilos of muscle and lost an extra 2% body fat.
Bottom line: Unless you want to look like a knuckle dragging nickleback fan who once to expand with water-weight, looking for a stupidly over exaggerated 1 Rep Max you DONT need it.
If your desperate, get a decent, well established Whey and have 17.5g (with water) as a post-workout (cardio, muscular endurance) or 35g when lifting heavy weights (reps of 6 maximum).
Protein shakes are a gimmick that will exploit your finances and abolish any sense of personal responsibility for your fitness and/or strength ("the protein will build my muscles... NO. Going balls out on Deadlifts, Squats, Powercleans and Pull-Ups will build muscle, the protein will help a TINY bit if you DO those exercises).
The ACTUAL secret to muscle building? Eat 6 small portions a day of fish,chicken, turkey, pork, sweet potato, red meat, broccoli, spinach, nuts, seeds, fruit, fruit and fruit (and drink water)etc and FORGET alcohol.
See results in 10 weeks with 3-4 workout sessions a week. If you dont, your kidding/cheating yourself.
Good Luck!
Tom