C4c:
One more thing. That Pro Plan list is my usual no starches, glutens, soy, minimal or no grains etc. The Pro Plan line has about five varieties and about twenty recipes all together (I kid you not). I went through each recipe under each line to eliminate what does not agree with my kitties. So depending on your pet food criteria you may find more recipes that your kitties would like and do well on.
Everybody, Betsy Greer posted a link on the review side to a pet food calculator that you mind find useful and the site looks like it might be interesting as well:
http://fnae.org/dmb.html?inputboxm=72&inputboxi=7&button.x=103&button.y=22&button=Click
