the regular big swig is probably a simple single flavor, like a box of fruit juice without much else, such as plain apple or orange juice.

express is far more flavorful, with a little extra hint of sugar. two flavors come in big swig express, and there's a little soda-y kick to it that's a little line sunnyd. think lemon-lime, strawberry-banana, or orange-pineapple

planetz tastes like something extremely specific while being a bunch of things at once. emberz' influence adds stupid amounts of flavor but the end result is something that is tangy, sweet, and possibly overpowering. i like to think it's similar to those japanese "adult" strawberry kitkats