Knowing that there's Korean Vocaloids and UTAUs out there, I'd rather listen to them (or actual k-pop singers) than Vocalina. The sound of Vocalina kinda has the same charm as Muta, but Vocalina is being presented as finished software while Muta is only in alpha.
It could be error on the user end, but Vocalina seems to have timing issues too. Generally I just don't like it as much...