[anonymously]

In my opinion, it depends on the dog.
I know my poodle mix doesn’t tolerate changes well, so she gets Nutrisca Salmon and Chickpea as a base, sometimes I get a small bag of Nutrisca Chicken for in between.
My terrier does well on the Nutrisca (fish or chicken) but he also likes Orijen, so I alternate for him. The poodle doesn’t like Orijen, I think it’s too rich for her, she tends to vomit when I change her diet, so I stick with Nutrisca for her.
However, I change the toppers frequently.