There is a marked difference in Sona compared to how he was in April last year. Finding a new home for Juku has been really good for him (and from what I hear, for Juku as well).
He is a lot more relaxed, happy, playful, and cuddly than before. He still hides from visitors, and from unusual loud noises. He is still somewhat skittish, but I'm working on that and making progress.
I am relieved and happy that he is enjoying his life again. He is still as vocal as he was before, but that's just how he has always been.