Simon and Hallie are both eating Wellness right now. Every once in awhile I have to give Simon Prescription Science Diet for his tummy (the low I/D). I'm not really happy with Welness lately though so I'm thinking of switching to Nutro. Hallie will eat anything so I have to be careful with her weight. And Simon's tummy is so sensitive. But it's so hard having them on different food, I don't know how those of you with more than one feed different food. Please do tell......