They are both great strains. For myself though, Blimburn seeds Cindy seem to counter pretty much all the problems I get from having ptsd. It makes me happy, motivated, energetic, helps me forget, plus helps me sleep, because I have an active day, everyday.
However, I have a friend who reckons that Brothers Grimm Cinderella does the same for her, but she has depression and anxiety. She begged me to grow it again, saying it was one of a few strains that she can leave the house and go into busy public places. She also said it's been years since she's had anything like that.
Brothers Grimm C99 is lovely, really strong. I have a jar of it that is approx 8 months old.