Gatorade Perform 02 Low Calorie Citrus Mango

I know that Gatorade is meant to be consumed after some sort of physical activity in order to quench your thirst and replace lost electrolytes, but I'd also like to think that the person doing the drinking had burned off enough calories during said activity to counteract the sugar in the drink. These low calorie versions of theirs are borderline undrinkable. The thing that confuses me is that it's not that they taste diet, they just taste gross. This is sweetened with erythritol and Reb A as well as some sucrose. Normally a match up like that is the best you can get with zero calorie sweeteners, but it just tastes wrong here. I blame one of the other ingredients, because it has an aftertaste like I've never experienced. The initial taste is a general citrus flavor that's a tad diet, but that aftertaste just taste the drink on a weird turn and all of the passengers are thrown from the vehicle. It's just ghastly.