You guys need to read the Window Of Opportunity by Adam (if i remember right) of abcbodybuilding.com, They did an EXTENSIVE article/study and provided some of the best info on insulin/carbs/protein/rehydration and correct ratios for the best post workout nutrition. Before you make up your mind about anything, please do check out the laymans version and extensive version of the window of opportunity by them. Helped me alot to learn about your body post workout.
Hope you find this helpful.