Need help with selecting a dog food for a picky eater?

I know 'kibble & bits' and 'beneful' are full of fillers and are poor quality but my dog only wants to eat the softer chewy pieces in the cheaper brands of dog food. When i tried giving my dog a higher quality kibble (Blue Buffalo) he did not want to eat it. Are there any higher quality dry dog foods that have any chewy pieces? I tried feeding him holistic canned food but it have him horrible diarrhea so I would really like to find a semi-soft kibble if it exists. Thank you for reading!