I am just loving the Route 44 Diet Sprite with Diet Cherry and Vanilla Syrup. At happy hour it is half price! That is less than a dollar for a huge drink that lasts me for the rest of the day. The flavor is perfect for a warm summer’s day and very refreshing and light. The only calories in the drink come from the vanilla syrup a necessary addition to the mix. Does anyone else have a Sonic favorite you are enjoying this summer?