I started Quinn on Orijen Puppy and while she went crazy for it and the ingredients list was amazing, it was just too rich & high protein for her. She got quite gassy and her stools were loose.
After that bag I switched her to Acana Grasslands, which is very similar to their puppy formula IIRC. It was a bit lower in protein than Orijen (plus Orijen has increased the meat % now, which I knew definitely wouldn't agree with her!) The difference was amazing! No longer gassy, and perfect poops. Her coat is in beautiful condition. It's what Dally is being fed as well and she's doing great on it, too (although you could feed her anything and she'd be fine, lol).