Science diet seems to be okay.. in comparison to Iams/Euk (or so I've heard).

But when you feed the more expensive (higher quality) foods, you actually have to feed less (dogs are able to use more of the ingredients instead of passing all the fillers) and you end up paying roughly the same amount.

We feed Chicken Soup. The price is about 5-10 dollars more than Eukanuba (what we used to feed). The results are amazing and the difference in price isn't too bad.