i've got two Kiwis. I like them fine on sources that you want to brighten in a mix. Hand percussion, tambourine, harmonica, stuff that jangles. But, to my ear, too bright by miles to be a happy vocal all-rounder. Singers with thin or nasal voices are likely to have the problems with their voices accentuated rather than complimented.
IMO the U87 suggestion is pretty reasonable. Or a 414. They sound fine on most everybody and they EQ nicely.