I currently have two young felines, ages five and nine months. They're on a half and half diet more or less (half wet, half dry). Both are grain free good quality foods. I suppose I'm more or less curious as to the pros/cons of eventually possibly transitioning them both to what would be considered a more "raw" based diet. Honestly I know little about it besides a few facts. Is it more cost effective than premium canned wet such as Merrick, Natural Balance, Taste Of The Wild...etc? Thanks in advance for the help and support!