My guys all eat Wellness Core. It's all human grade FDA inspected and it doesn't have any grain or yucky by-products in it.....no artificial preservatives either. A little more expensive but you don't have to feed as much and what I save on vet bills it all kind of evens out. No one's ever turned their nose up at it either!
I am also a big coupon user, which does help with the cost, the papers usually will have $1 - $1.50 coupons. Even our friends will give us the coupons for dog food. We all exchange between pet food, litter, diapers, and cleaning supplies. It really helps.