i'm a huge fan of gu. i will use this stuff on any outing to stay strong all day. unlike bars or other foods, these guys don't get rock hard in the winter, perfect for getting a few extra laps of skiing in. also love them backpacking, easy to store in the hip belt pocket to prevent me from bonking on a long climb. also use them on cycling tours. mint chocolate, espresso love, vanilla bean, and tri-berry are my favorite flavors.