Both my dogs are eating Nature's Variety Dog food.
Here is the link:
http://www.naturesvariety.com/
It has been good for Bailey who has a sensitive tummy and allergies to grains and it keeps their poop firm.
Go to your local pet store, (not petco/petsmart) and ask for a sample.
Nature's Variety will send you some samples also if you call them.
Bailey's vet told me not to give her missing link because she says she has seen allergy's from that.
Take care,