Well the cat's seem to love it, which is the important thing.  A nice bonus is that I've noticed that their bowel movements seem more solid and certainly less smelly.  The whole house use to run for cover when we saw them heading for the litter box, not now we don't even notice when they "do their thing".  Also, my kitties are long haired and typically shed like crazy.  I switched to Max Cat about 2 months ago and I've noticed a significant difference in their coats, so this cat food has to be doing something right.  Their hair is much softer, shinier, and does not seem to tangle as easily...but the biggest improvement is that they are shedding less.  My black clothing and vacuum would like to express gratitude to makers of Max Cat.