u/Beginning_Onion_6588

I need to switch from puppy food to adult food soon and I’m looking at the Purina Pro lineup (regular adult food, not any special diet) and the Purina One lineup and if I’m calculating by calories the price difference isn’t that much? Unless I’m doing my math wrong it’s maybe a 10% difference.

So if cost isn’t an issue and I don’t need any special diet food, what really is the difference between the two lines?