^^ My initial thought about Coke Zero was, "I give it a zero." But I realized that I drank it out of a plastic 20 oz. bottle (the worst container in my opinion), and it wasn't very cold.
Then late last year, I gave it another chance by drinking it out of a well chilled can (second to glass as the best container), and it really tasted different---better!
So while I prefer Diet Coke to Coke Zero, I do like Coke Zero.
Eric