No experience with these foods - we feed Orijen. In order to avoid a problem switching, Eagle Pack makes a transition powder that's WONDERFUL!! Use it for 7 days and no problems with switching foods.
Some of the Wellness kibbls are pretty rich. I do like Taste of the Wild and they have their Buffalo which is really good. We use their Pacific Stream though. It's also less expensive than some of the Wellness kibbles and for sure the Orijen kibbles.
Fromm Four star makes a Duck and Sweet potato with no wheat or corn. I used the Natural Balance and switched because their coats were not the greatest. Good Luck!
Stared using Natural Balance about 7 months ago on my Black girl, started with the Veg. formula Best coat she ever had thick and shiny just switched over to the Potato & Duck about a 2 months ago still like what I see and she loves it but then she is a Lab...