I own some gfuel shakers, and this shaker cup is definitely a better build quality than those. The sample flavors were also great, definitely making the swap to GG from gfuel
I was a big fan of GFuel's Spicy Demonade flavor, but Sigma Brain hits my love of lime and adds that nice spice. Definitely a good small bite just on the tongue and back of the throat.
Delicious with a hint of creamy flavor to go with that blue raspberry. Definitely picking this one up again.
