"CIAF Drink Score rates soft drinks solely based on categories like carbonation, flavor, temperature, consistency, cleanliness, selection, and price. Each category is scored on a scale from 1 to 7, with 7 being the highest. The highest possible score is 42. The leaderboard rankings are as follows: 1. Subway: 38 2. Taco Bell: 36 3. Freddy's: 33 4. Wendy's: 31 5. McDonald's: 31 6. Burger King: 29 7. Steak n Shake: 27 8. Jack in the Box: 11. Subway scored a total of 38 points with high marks for carbonation, consistency, and cleanliness. McDonald's and Wendy's both scored 31 points, with Wendy's earning top marks for carbonation and selection. Jack in the Box had the lowest score of 11. Price per ounce was also listed for each restaurant."