Wellness Complete Health Deboned Chicken, Chicken Meal, and Rice Recipe a good dry food?

My cats only eat Wellness cat food after we tried many many others a few years ago. It's pretty expensive, but definitely the best. My male cat used to throw up a lot before we switched. The pieces are pretty small in Wellness, though, so I am guessing that is why he never throws up now. The grain-free feature is why I originally started using this; cats need meat, not grain.