Need Dry Food Suggestions

My boyfriend's mother needs a cat food that won't break her wallet (she has 9 cats), that they can keep down (some do good on some foods and others throw it up right after eating), and won't give her males crystals (UTI)... Any suggestions? I don't know what to tell her because I only have Petrie..

Sportmix is a great deal if she can find it about 14 $ for 35lbs