Jello brand has a bunch of good popular flavors of their Jello.
However the most popular Jello Flavor is Lemon-lime Jell-O especially during the summertime.
Strawberry Flavor Jello is also a very popular Jello Flavor besides the Lemon-lime Jell-O flavor.
Some other good and popular flavors of Jello are Lime, Berry Blue, Raspberry, Cherry, Tropical Fusion, Watermelon and Orange Flavor.
I love the Lemon-lime Jell-O flavor and eat it mostly but all the flavors of Jello are very delicious and are a good refreshing treat when it's hot outside.
The Jello also hydrates you because it's made mostly of water.