not sure if the email linking this just came really late for me, as i see comments from 12 hours ago (?), but this was an unlisted video from Dreamtonics comparing SV1 and SV2 voices.
tbh i feel like thoughts on this is just gonna be so subjective, because i dont totally agree with the comments saying it sounds worse or doesnt sound different... i can hear flaws in places, no doubt. but perhaps i am more focused on how the tools provided in SV2 (the new vocal mode stuff mainly) just brings way more depth that feels way better than what SV1 was doing, despite any potential flaws/bugs to be improved on. we've seen Dreamtonics improve the engine and noise over time with SV1 so i dont doubt we will continue to see tweaks after initial release that make more quality improvements. i just dont really hear anything in these comparisons that was making me think "wow they sound low quality now, i dont want to use them in SV2", personally. they sound fine, just different, which is to be expected with whatever new engine changes theyve made.
will say, i think out of those three Felicia sounded the best in improvement and i kinda wonder if the age of these vocals kind of effect how much better theyre sounding, and why some may not sound like a huge boost to SV2. like, if they were made way early on they probably didnt utilize whatever new or improved methods of making a voice bank that say, Felicia had due to being very recent? but thats just a theory.