Since we're on the topic of Meiko, I though I'd bring up my unpopular opinion regarding her! Meiko English is actually really nice, people just don't know how to use it. I've seen a lot of people try to cram her into songs that she is clearly not meant for, and from that they get that she's terrible. Most of the time I see this happen with rock songs, as despite of one her recommended genres being rock she has very little strength behind her. From personal testing, I've found that she tends to work best with pop songs and softer ballads, with maybe some lighter rock sometimes. Anything harder and she gets drowned out by the instruments. As well, 99% of the time people use her in way too high of a range. Her recommended range is B2-B3, and from my experience she tends to work well from about B2-A4, but people really love forcing her to sing in Miku or Rin's range, which English is just not at all suited to do. All this isn't to say she's perfect, far from it. I am aware that she is objectively a pretty poor quality voicebank. She's really muffled, like she's singing through cotton balls, she doesn't seem to know what an "end consonant" is, and some of her phonemes sound strange. But if you can work around these issues, Meiko English is a really pretty voicebank that people use in all the wrong ways, and that ruins it's reputation.