I don't really get why those westerners said that IA English C is the best and "shits on every English Vocaloids"? Like, even her vowel transitions is choppy.
I'm aware that CeVIO handles consonants and timbres better than Vocaloid, and it has some great features that Vocaloid don't. But it's still CeVIO and those choppy note transitions are already on its DNA, so that's a big minus to me.