If you are not adverse to shopping online, then most foods are available online. Some offer free shipping and often there are sales.
If I were you, I would first go to my local pet stores (or stores where you will be purchasing your pups food) and look to see what they have. Talk to the clerks (note that some will be more knowledgeable than others, so beware of this) to see what they recommend. Tell them you are looking for a 4-5 star type food for a large breed puppy that has no corn, wheat, soy, artificial preservatives, menadione. There are puppy foods and there are all-life-stage foods that will work. Let them know if you want to feed grain or gluten free. They ought to be able to point you in the right direction. Then you can read the labels on bags and If you find something there you are interested in then come to this site and look it up to see how it’s rated, etc. You could then ask on the forum who makes it, any recalls, etc.
One important thing to note is that you are getting a large breed puppy and they need special nutrition in order to grow correctly. I don’t have large breeds, but there is a thread on this forum that lists appropriate large breed puppy foods. You must use a food with the correct amount of calcium to phosphorus ratio. I believe it’s no more than 1.5/1.0….and this is dry matter, not as fed. I know that’s probably confusing, too, so it’s nice to just have the thread that does list foods that are appropriate.
I know this response seems jumbled but I am writing things down as they come into my head LOL….sorry about that. I hope it helps you some. 🙂
