Top 3:

Louisiana Fish Fry
Zatarains
Kentucky Colonel

I like the Louisiana Fish Fry varieties the best, especially the lemon pepper and the cajun though the rest of my family finds the cajun too spicy. I've found that if you coat the fillets with a thin coat of regular mustard, the breading will stick much better and you can't taste the mustard once cooked. BBQ/smoker guys do this mustard trick with their spices and such on their meat, same concept. Most Walmarts have the Louisiana Fish Fry brand, if it's not in the cooking aisle check by the seafood counter.