As you can see, when someone asks an open ended question like this, there are a bunch of conflicting responses simply because food opinions are so subjective...
The first thing you need to do is determine what kind of food/restraurants does you (and your family) enjoy at home.
For example, if you enjoy burgers, and you are completely satisfied with a place like Burger King or Wendy's, then Backlot Express and Studio Catering Co. should be satisfying. My wife ate there last trip and really liked it.
When you order out for pizza, are you fine with a Little Ceasers Hot N Ready $5 pizza? Or any other typical pizza chain (Papa John's, Dominoes, etc)? If so, then you would probably enjoy Pizza Planet. I've ate there 3 out of the last 4 years we've been to WDW and enjoyed it every time I ate there.
I am also one to eat gas station sandwiches and subs, so Starring Rolls Cafe is great for their huge sandwiches.