I was feeding Bit and Scratch Pet Promise dry for quite some time, but recently Bit refused to eat it, so it's time to switch. Here's what I'm looking for, I good quality dry food that has small kibble and is easily digestible (Bit has a sensitive tummy).Also, I don't want any kind of by-products or fillers at all. Now, I'll give you some details on my boys: they are both around a year old, both are with in the weight limit for their frame type, and as of today both in excellent health. Price for the food really isn't that much of an option, because I'm an uber-obsessed furmom that wants the best for her boys. Any ideas?