i stay with the same brand, good quality kibble. thats all Hope gets with maybe a raw bone and/or bits of left over meat (such as chicken) and pumpkin to have in the evening. when i was working in a grooming salon she used to get other premium kibble (samples for our customers) as "treats" - she was none the wiser and thought "yummo!" hehe and never had issues with it 🙂
also -when we have fostered dogs she has had some of their kibble and had no issues with eating it. im pretty lucky i dont have a fussy eater 🙂