Has anyone tried Taste of the Wild brand dog food??

I bought a bag of 6kg+ from my vet 2 weeks back, both my girls loved it, but I'm not sure how good it is though their stool became very much lesser ( was feeding on arden grange chicken, then changed to Go! duck cuz vet ran out of AG that time..). I'm considering to put both my girls on Taste of the Wild, need some advice here..

I would also like to know whether it is ok or not to put my dogs on Orijen 6 fish & Taste of the Wild, mixed? I bought a big bag of Orijen as gift to my cousin's dog but didnt manage to pass to her ( her dog died on 428 evening *sob*).. I now have 1 big bag of Orijen at home, 13kg+ and another bag of Taste of the Wild two-third left..

I bought the roast duck formula too, but I thought the price is quite affordable? I'm planning to get the 13.6kg pack once the current one finish. Though this Taste of the Wild brand quite affordable actually, was quoted roughly around rm200 for that 13.6kg roast duck with another 20% off   So what brand are your dogs having right now??