Mercado McCann’s “Best Coke Ever?” campaign for the new Coca-Cola Zero Sugar features quirky, humorous spots where duos such as a dinosaur and asteroid or puppet and ventriloquist argue whether it’s the “Best Coke Ever?” The push is running across social, TV, out of home, digital and streaming audio and features 15 refrigerators in select US cities that will dispense Coke Zeros via QR codes.