We've used:
EVO (both the original as it first came out and RM)
Wild and Natural
And also Blackwood, a locally available food, and a couple of others I can't remember now. I've been through the gamut, trust me!
EVO RM is still in my "Ben" rotation. I'm on a really, really limited budget here so unfortunately I can't feed any of those others. I'd also love to try Origen.
Also, I've got a dog that a) believe it or not does
best on corn as a carb source (yes, I was shocked when I figured that one out) and b) has bite problems so he needs a special-shaped kibble. Bil-Jac and the one I use now are both soft, pellet-shaped kibbles he can pick up easily.
Meet Cord (he's pleased to meet you):
And my other "problem dog" Ben, who is allergic to chicken (which eliminates most of the foods you mentioned above) and many other things. He eats the NB allergic formulas, and as I mentioned Innova EVO. My two non-working dogs also eat whatever Ben's eating.
Ben. He's also pleased to meet you.
As I mentioned, the working dogs require huge amounts of energy inputs that would literally eat us out of a home. We're talking the equivalents of four cups of EVO each, just for instance, plus raw meaty bones. The Maremmas eat six cups of EVO each - I was
weighing their food when we used EVO!
The mill food is much denser in terms of calories plus of course it's a tenth the cost. When I'm feeding three "outside" dogs in training, plus two 100+ pound dogs that burn as many calories as the BCs, plus six BCs, plus Maggie and Zhi, cost does matter, unfortunately.
Again, it's not my preference - I'd be doing 100% raw preferencially - but it gets the job done and my dogs still have not been to the vet for any reason other than annual visits, including my 14 year old - except for Ben the problem child. But even Ben is nearly twelve, still is capable of rounding up sheep that are 200 yards away and working for an hour or so in 98 degree heat, and is still my "go-to" dog when tough jobs need doing. And when he goes in for anything, his overall health still amazes the vets.
I like to believe that all these healthy dogs are a not a coincidence.
Gus, a recent addition, is also pleased to meet you:
And my baby dog Ted is just pleased . . .in general . . .