Just responding to bits in the whole thread--
Science Diet actually isn't a very good quality food. (Referring to the kibble - I don't know much about the wet food.) We used to feed Lucy the natural choice (or whatever it's called) variety of Science Diet. It was probably the best of the science diet line but still not great. Nothing in it was bad for the dog, however, it was getting by on the minimum side of nutrition and ingredient quality. Also, Hill's is manufactured by a company that tests its food on animals. I've heard varying reports about how humane the testing is, but I don't really trust companies to be as humane as they say they are, so I prefer not to buy their products.
We now feed Lucy Authority Harvest Baked food, because it has high quality ingredients, good minimum nutritional stats, and is a good price for the quality. ($10 cheaper than Nutro Ultra for the largest bag.) Authority's wet food was involved in the recall, however, I haven't heard anything about harvest baked kibble. The Harvest baked doesn't contain wheat gluten, so I think it's safe, but I am nervous. Recall aside, I think it's a good food.
For food not involved in the recall -- we've fed Blackwood, which is pretty decent quality. I've heard nothing but high praises for Solid Gold, but I think you might have to mail order it. Other good foods, suc has Innova, have been mentioned in the thread.
Regarding the "sham" of finding out that the low end foods are the same as the high end foods -- being manufactured at the same facility only means that the common ingredients are the same. e.g. if a product contains "corn meal", each product has the same corn meal. However, if you compare the ingredients of a premium food to a low end food, you'll find most them are different. Therefore, the foods are not identical.