I am feeding Honest Kitchen Preference to a 14 year old dog with early indications of kidney impairment. Following the recommendations on the Dogaware website here:
http://www.dogaware.com/kidney.html#non-prescriptionI selected 80% ground beef, ground chicken thigh, ground pork and ground bison (all raw) as the four meats I mix in (in rotation). These have phosphorus levels that are low enough to not overstress his kidneys.
After about 3 months on this food, his kidney values have dropped back enough that his vet is pleased, so until or unless something changes, I will stick with this food for him.
Oh - and with regards to the large chunks of dried veggies and fruit that he tends to eat around - I pulverize the dry Preference in my food processor upon receipt. No more picking around the veggies!