I had tried Stella and Chewy's when I first got Riley....
don't know a whole lot about it. I have also tried Nature's Variety Raw,
Answers Raw and Primal Raw. I decided I liked the Primal Raw the best
and that is what I feed Riley when I feed raw.
I have read that the S&C freeze dried raw is high in Fat.... ??
Right now I am feeding Riley Primal Raw/Chicken in the a.m. and
Acana/Pacifica Kibble in the p.m. He seems to really thrive on that.
Sorry that isn't much information with regard to Darwin's or S&C.
Hopefully someone else will have more info.