I prefer Elva Hsiao's deep and sexy bass, which sounds unique. Personally, I think she is also one of Stephanie's most unique songs among the other two divas you listed. I don't often listen to it, but I don't deny that some of her songs are very nice. Singing love songs is very emotional, but everyone can sing different songs. Stephanie and Jing Liu can't say that the capital can sing, but that's Elva Hsiao's, but it's absolutely no problem. At her previous concert in Beijing, some people commented that the First Capital was the chorus of the audience. I sum up four words, each with its own merits.

Ps: It sounds very emotional, depending on everyone's different experiences. I still feel that there is no best answer to this question to prove anything.