Board Thread:General Discussion/@comment-26426525-20150524214902/@comment-26340428-20150531084504

He isn't popular because he doesn't have very many original songs. He doesn't have very many songs because his voice is weak and he can't sing low notes very well. For those reasons, his voicebank is supposedly hard to use. Since KAITO has a similar tone and is easier to use, many people would rather use him. SF A2 miki is the same. Her voicebank is hard to use because of pitch issues and people would rather use Hatune Miku or Megpoid:GUMI so they don't have to deal with the issues that miki has. Kaai Yuki was more popular because there were no realistic sounding child vocals at the time. She also had voicebank issues because of her voice provider's age but there were really no other alternatives. Yuzuki Yukari had a distinctly soft vocal that was flexible and good at conveying emotions. Basically, people like convenience and they don't want to put more work than they have to into something.