Duchaine said 25% whey was acceptable, YMMV.

Try and get as much protein as you can from solid foods. When you come up short of your goal, then add in powder!!!

whey should be for pre/post workout when the body needs protien now. Casien at night if you are a hardgainer. Then get the rest from solid food. This is the best way, but obviously its not always easy to get a meal in so from time to time using shakes when on the go is ok.

what one used powered whey a lot, would they really see that much of a difference. Lets say i could only get 100-200from meat and i was shooting for 400 grams a day from 75 gram whey shakes while on cycle. will this not work.

whey only stays in the system for two hours. Their is alot more to it, but to simplify the muscle takes in the majority of the protien needed to recover 45 min after the wrokout. So then its a good thing. But the flush of aminos in the blood stream when the muscles aren't receptive (a couple hours later) will tax the liver because most of the whey aminos will be pissed out in 2 hours.