One thing that's really good about GNC is that if you don't like what you got, you can take it back and try something else and get full credit for what you return.
I've used that twice when buying protein powders. I use their AMP Performance Wheybolic Extreme 60. Love, love, love the chocolate. A manager of another store told me he loved the strawberry, so I bought it and HATED IT! Brought it back and was able to exchange it for more chocolate, thank heavens!

I also tried their Whey Isolate 28 in Vanilla and thought it was vile - returned that one as well and also got some more chocolate Wheybolic Extreme 60.
I love, love, love it in my morning coffee - 1 scoop in the coffee and it tastes like some kind of extravagant Starbuck's drink. SO delicious! One thing I've found about most protein shakes is that they're MUCH better with milk than with water.
Betsy