im pretty sure whey is generally cheaper in terms of workout powders, but yeah, most people that care for the protein just want it to be not vomit inducing and cheap as possible

im personally not like a next level athlete or anything. peanutbutter is fine for making my ass fat and muscular at the same time. i usually get the 100% peanutbutter kind what has no additives and skim the oils off for curries.