I honestly buy a different variety every time and usually have five or six different foods in the house. My dogs don't have sensitive tummies and handle switching every meal really well. I really like trying new stuff, so basically I buy anything that is poultry/egg-free, whether it's dry, frozen, canned, dehydrated, etc. We've tried basically everything, and everything has been great except Fromm. They insist on putting eggs into everything so Brisbane can't have it, and my non-allergic dogs won't touch any of the half dozen varieties we've tried.
I also throw in yogurt, cottage cheese, canned salmon and sardines, salmon oil, seameal, cooked veggies, homemade home broth, etc on occasion because routines are boring.