Protein Factory or other CrossFlo Whey tastes OK, is nearly pure protein(90%), but pricey.
ON Gold tastes the best IMO and is also an OK protein %, just not as pure in its
% (50%) -ON Rocky Road flavor -marshmallow flavor is super sweet if you like that.
Isopure and some of the other Isolate brands are better and moderatly priced and in the 80% protein area.
EAS or other major brands are OK if you are on a budget and they are often on sale.
I can find it on sale most places, even TARGET and they are OK with Whey Concentrate and Isolate blends in the 50% protein range
If you are using a ton of whey, you will go broke buying the high end stuff all the time unless you have a fat wallet. Just double up the serving size and figure in the fat/carbs into your diet..