I have fed Felidae to my cats and they loved it and did well on it. Currently Im feeding California Natural for its lower calories ( two of mine were getting a bit chubby) and before this I fed Innova. All of my cats have also done well on Innova (with the exeption of the weight gain in the two chubby cats). Though I think there are many great brands out there..Im somewhat partial to Natura's products(Innova, Healthwise, California Natural) because my cats look so good on it, its one of the better brands thats fairly easy to find around here, I like the maker's philosophy and they have great customer service with quick responses and sincere,well explained answers to all of my questions.
There are so many good brands to choose from - Wellness, Innova, Felidae, Pinnacle, Royal Canin, Natural Balance, Solid Gold are a few IMO.