It depends on what project. For most, I'm fairly certain v3 wasn't out yet.
Miku V3 wasn't out until 2013. So Ryo used V2 voicebank on all of his songs then retired in 2012.
I'm not sure about "Tsumi no Namae"(2016). Which came when he returned. I don't think he'll come back any more?
Yeah! I thought so. What about Mind Brand and Sand Planet? I feel like they sound like v2 as well.
Look at the year of the song release, I'm sure it'll tell you something
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