My crew is currently on Canidae...
Pepe was on raw before I got him, and he wasn't doing well on it - but he had quite a few health problems at that time too, which could have caused the stomach issues, not the raw. Flicka's never been tried on it - but she does so awesome on Canidae - I don't want to mess with a good thing.
Pepe was on Karma for about a year, maybe a little more, and then we got Flicka, who was also placed on Karma. At first Pepe couldn't stomach it, and Flicka never did good on it to begin with.
So we switched...
Both did horribly on Innova - Flicka did a bit better then Pepe, but not much.
So we switched again to Canidae - and both of them are doing awesome on it. All my fosters get fed on Canidae, and the majority (I'd say 75%) do well on it - others don't. I find that the dogs that are generally healthier do better on Canidae then the ones that may have other medical issues.
If I do switch again (which I'll only do if they start having issues), I'll try either Solid Gold, or RAW.
-Rosefern