as a villain I like adagio way more. as an actual character sunset shimmer is the best. We known her for longer and we see more of her character. we got to see some of her personal life which is great. overall adagio is kinda shallow as a character and lets be honest for a moment, sonata and aria provide most of the comedy. Sunset shimmer is just more in depth as a character and that's why I like her more. Adagio is a legend but Sunset is a friend.