Not reading 4 pages of arguing so will just answer the question from my experience. Beverly International never bloated me or gave me gas. Labrada, Myoplex, Bodytek, and some others did.
I would also say that Muscle Milk never bloated me or gave me gas either but just made me sleepy as hell for some reason.
I dropped all protein drinks years ago and have never felt better. I didn't adjust my diet to compensate for the protein/calorie loss either and never saw any shrinkage. Since I get Beverly for free, I keep a tub around for making pancakes, protein bars (for long plane flights I will make up about 8-10 to take with me) and for adding 3/4 scoop to my oatmeal some mornings. It takes me about 6 months to go through a tub now.