I am looking to change my hounds food from 4Health Grain Free Large Breed to either Diamonds Natural or American Journey as i have hear good things on both. He has seemed to always skip multiple meals once a week or two and i was wanting to change to see if it helps. The 4Health is Turkey based, so i was thinking i would switch. Is there a flavor that most dogs seem to like better or is it each dog just different. I see there is Salmon, Beef, Chicken, and Lamb. Thanks in advance.