I can’t find my original source, so this will have to do.
Seriously, is there anything you don’t know?
I would put in another vote for Biotest’s Grow whey/casein products, available through t-nation. Both the low-carb and regular versions are tasty, although I have not tried the orange or banana flavours. Shipping costs to Canada add up, though.
Not sure where you live but if you have a Costco near, you might want to try this whey. SportPharma Low Carb Whey. 22g Protein and Sugar 1g. The taste is not bad and can be mixed with water or even skim milk. The 6lb container is $19.99. Not a bad price either.