Ah, the old Silver Plan was fabulous ... Rainforest Cafe was included when we did it in December 2004. Probably what the OP was talking about if she visited last in 2003. It was closer in spirit and cost to the current DxDDP than basic dining.
OP, it's hard for me to answer the question since there are so many great restaurants. Are you looking for best character meals? Do you like buffets? Are you interested in signature dining?
When we did deluxe in September, we had a "fun" character or theme-y meal for late breakfast or lunch, then ate at a signature every night.
Some favorites of my two oldest boys are, in no particular order:
Coral Reef
Garden Grill (Mickey and friends)
'Ohana for breakfast and dinner (breakfast has Lilo, Stitch & Mickey, dinner has no characters)
Biergarten (it's the oompa band)
Crystal Palace for any meal (Pooh and friends ... seems childish but they always request it)
California Grill (signature)
Chef Mickeys (Mickey and friends ... though it has my least favorite food on this list)
Tusker House for breakfast or lunch (breakfast has Donald & friends, lunch doesn't have characters)
Sci Fi Diner
1900 Park Fare for breakfast (Alice, Mad Hatter, Mary Poppins)
Jiko (signature)
Narcoossee's (signature)
Raglan Road (they love the band)
Beaches & Cream