Here's one that's been on my mind for a while and I think is quite unpopular....I really like CeVIO and IA AI
There are a lot of reasons CeVIO wouldn't be someone's cup of tea, but it kinda bothers me when I see a CeVIO announcement followed by people I follow/see around saying it "would've been better as a SynthV." Personally, I am really happy that there are more synths around instead of just one dominating synth, and I think CeVIO has always been capable of having some really amazing results despite its shortcomings compared to other synths like Vocaloid and SynthV. I've always felt CeVIO had a lot of potential, but lots of people, myself included, do not take the proper time to sit with it and learn it to an extent to make amazing results. Some I can really think of are songs by out of service with ONE, which never fail to impress me.
I also really, really like IA AI. IA has always been my all-time favorite, and I was really excited for IA AI when she was announced, and that hasn't changed. I don't think she's too different from the core of IA, partially because I went in knowing there was no way she'd be an exact 1:1 with IA's original Vocaloid voicebank--nor does she have to be. I personally compare her to IA as a whole, who isn't just the soft/airy tone of IA's original VB but also the pretty different powerful tone of IA ROCKS, and from the demos, I like that she's not too soft and not too powerful, she sits perfectly in the middle and that makes her more versatile.
Tone-wise, I think she's very much the same IA I know and love. I think it's hard to tell hearing two covers solely using one VB because they aren't meant to show the similarity, but I think
Pray For Real does a really good job of showing how similar you can get IA Vocaloid and IA English C's tones. I remember when the song first released, it really tripped me up because I could only tell them apart because of engine noise and CeVIO accents that came through at times.
Bit ramble-y, but these were on my mind, espeially thinking back to Yukari Rei's release and seeing people not like her because she "wasn't different enough to justify buying" but IA isn't the same enough to be liked either....so I concluded people just didn't like CeVIO, because I genuinely do not understand it when I think about it. I like both and don't feel that they're too much the same or different than their Vocaloid counterparts.
(Genuinely, if someone can explain in-depth why they dislike CeVIO/Yukari Rei/IA AI, I would greatly appreciate that. I feel like everyone's reasons I've been seeing are so vague and it confuses me even more so I shrug it off as engine noise or purely preference)
And to throw in another opinion, I really wish SynthV had actual trials instead of or alongside Lite versions. Dunno how unpopular this is, but as someone who has already sunk in A LOT of money into synths, I don't like my "testing a VB" ability to be done with a stripped down Lite VB, it doesn't really tell me anything about the VB at all except if I like the voice. I really like usages of Maki's Japanese AI, but touching her Lite at all makes me not want to get her for various reasons, and it's like...I'm either stuck hoping the issues I have are fixed in the full version, listening to more usages to try and tell if they are, or asking a friend who has the full version to tell if they are fixed--so then, what's the point of me using the Lite version? I'll still be going in more or less blind and hoping I like using the VB.
Don't get me wrong, I DO think Lite versions have their place. They're great for beginners, hobbyists who don't care to get the Full VB/can't afford it, etc., but as someone who does buy VBs, I would really, really love the option of a Full VB trial alongside Lite versions. I don't think I can properly judge if I enjoy working with the VB if I'm not even working with the Full VB, but maybe that's just me