Those kinds have always made me very nauseous. I tend to stick to the whey isolate protein drinks. Except last month I had to buy the "all natural" version of my usual Optimum Nutrition Rich Chocolate? IDK what the hell was in it (read the label, nothing all that earth shaking) but I was so nauseous after two sips, I dumped the cup of coffee. Returned the whole tub and GNC actually took it back. First time EVER GNC has done that for me. Bought my old kind, no prob.
The best protein drink for YOU is the cheapest one you tolerate. Period.
Some people will tell you whey isolate is the shiz-nite. I say go by your labs. That's all that really matters. What your labs say, and what you can afford.