Hi there Nick-
I’m with anon101 on this one. Hill’s is one of the leaders in research on large and giant breed puppy growth and nutrition. It is also one of the top recommendations for large breed puppy foods by board certified veterinary nutritionists. Your vet is likely making the recommendation because he believes in the food, considering you will most likely not even be buying her food from his office (hence even if he did get kickbacks from Hill’s it would be a moot point).
If your dog is doing well on the food, enjoys eating and it works for your budget, then it sounds like Science Diet is the best option. Also don’t get hung up on protein levels, as protein has been shown through 20 years of research not to effect growth in LBP’s.
