Sunmi kept more of her retro-inspiration in her songs than other members did upon leaving JYP. In addition, she maintains a distinct "sound" that you can identify as being her music (mainly thanks to instrumentals from FRANTS that compliment her style). I've seen Sunmi live twice now and she continues to improve each time whilst letting her music typically mature (with the exception of "Stranger" that is a terrible song). She will always remain one of my favorites alongside Taeyeon and BBGIRLS.