My guy is now a year old. I started him out on BB but his stools remained soft as he aged. I then tried Nature's Remedy, still soft. I then tried RC for GSD and he did well on it, stools weren't soft. But it is so expensive, I decided that I would go raw and spend less. Now his stools are exactly as they should be.
I would choose Blue Buffalo begrudgingly because I don't care for the company. They wont disclose who manufactures their foods, who their ingredients are sources from, and won't disclose some nutritional details about their foods.