Hi, I'm Dr. Deb. I will do my best to assist you today.
I appreciate that you want to feed Panzer the best food that you can but that's a very difficult question to answer for several reasons:
a) You will get a different opinion about this topic from everyone you talk with.
b) Veterinary nutritionists can't agree on this topic.
But, having said that, I believe there are a number of excellent dog foods available today.
I tend to avoid those with corn or carbohydrates as the first ingredient (although I don't think grains are necessarily bad for most dogs unless they are allergic to them).
I look for AAFCO on the label.
Specific brands which are good include: Wellness, Taste of the Wild, Bil-Jac, Pro-Plan, Solid Gold , Evo, Canidae.
I hope this helps.