Duff's is... well Duff's... not much you can say about a chicken and wings joint. Their wings are a good size. Their beer selection adequate. The wing sauces are generally tasty although the Armageddon sauce gives up flavor to try to burn your face off.
I like hot.. I love really hot that has flavor. Unfortunately armageddon isn't it. Mix the Armageddon with honey-garlic and we're in business (and that's what I frequently do :) They also have a hot honey-garlic that is pretty nice.
Their fries are kinda meh. I prefer a larger crispier fry (like those from Toby's), but some like soggy straw-sized fries. Just not me.