I am the odd person out, I guess. I do the Fromm 4 Star line but Addie gets bored of food very quickly. She will inhale any new food for approximately 4 days, and then get bored of it and becomes uninterested in eating it. When I started feeding it, she was a little over 9 pounds, her first week she went to 10 pounds, then got bored and dropped back down to 9-ish pounds.
Concerned for her weight, I researched and because the Fromm line is so similar, she is on the Beef Fritatta AND the Pork & Peas. We are almost out of the beef so we are getting the Chicken a la Veg this weekend (to add into the mix, and then it will be just Chicken & Pork). She LOVES the Fromm, but would skip out on eating because she simply did not feel like having the same thing again. I couldn't risk her losing any more weight. I started out with the beef, then added the pork. Some days she gets beef for breakfast and pork for dinner, some days it is vice versa, some days its all the same flavor. Since doing this, some feedings she still skips if she really wanted the other flavor, but usually will eat the next go round. When she eats, she eats the whole serving happily. I have never had any issue with tummy problems on Fromm, and am even thinking of trying their version of Surf and Turf once the pork is done.
Bless their hearts, but my in-laws use Orijen for their dogs, and when they puppy sat for us one night, they did not stop Addie when she started eating it (even though we asked them not to let her eat anything but her own food). The next day she had major tummy issues. They also did that when they fed Wellness & TOTW. She has tummy issues. So, I am confident I saying that if she was going to have problems with this Fromm rotation, she would have already, and hasn't.
She is finally at 10.4 pounds and maintaining. I can't feel her hip bones so prominently. On the Merrick, I would have considered her underweight, looking back.
Hope this helps.
What about doing Honest Kitchen?