These products aren’t vegan, since they contain whey, but I’ll note that Optimum Nutrition routinely puts out very good powders. I’d recommend trying them first. Don’t worry too much about finding the “best” powder in a nutritional sense; most candidates are likely to be so similar that it won’t really matter (especially since nutrition labels usually aren’t quite 100% accurate).
These products aren’t vegan, since they contain whey, but I’ll note that Optimum Nutrition routinely puts out very good powders. I’d recommend trying them first. Don’t worry too much about finding the “best” powder in a nutritional sense; most candidates are likely to be so similar that it won’t really matter (especially since nutrition labels usually aren’t quite 100% accurate).