Dymatize XT flavor

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So, I've been drinking Dymatize Banana Nut flavor recently. I've also tried Fudge Brownie and Rich Vanilla through a friend.

I was wondering what your favorite flavor of Dymatize is and also if you notice the chalky taste it has.

I'm looking into getting the Blueberry Muffin one soon but would love to hear what other people like from them!