Clif block shots -wonderful little cubes that taste great! Gu is too sticky and hard to open. I open the block shots before the ride and put them in a small zip lock bag. It makes it much easier to reach for them. If I am going for a shoter ride - around 30 miles, I drink Propel. It has very small sugar. If I go longer - Gatorade is still the best stuff. Don't worry about sugar if you go fast and long, especially in the summer heat.