It's not so much about whether a food is "premium" or not, but whether it's dry
or not. Cats with urinary tract issues should not have ANY kibble, no matter what the supposed quality of the ingredients. I also think adding a couple tablespoons of water to each meal of wet food is a good idea.
Some reading about diet vs urinary tracts here:
Also, incorporating raw into a cat's diet can take a bit of patience and perseverance, but it can be done! Some tips on how here: