I would stay with the Isopure protein for a solid protein source throughout the day, everyday along with whole proteins (foods). Any Isopure product though, is not a post-workout shake. This is accomplished by something with carbs and sugars. I find the only supplement on the market with the correct scientific ratios needed for post-training nutrition is Apex's LBM Gainer. It has 4:1 carb/protein ratio along with some fats and sugars to restore glycogen stores after your pump. Isopure does not do this, nor does any other whey, egg, or casenate proteins. You need carbs and sugars post-pump.
Good luck.