I don't think I can really pick one favorite fast food place but I love Hardees,Sonic and Burger King alot. Hardees has pretty good food for a fast food restrurant and I love their fries. Hardees, Taco Bell, Burger King, Wendy's (too bad they're aren't many nearby here anymore :( ), Sonic,White Castle, McDonalds and Rally's are among my favorites too.
There's a local fast-food chain here in St.Louis called Lion's Choice and it's pretty much the same as Arby's cause they sell most roast beef sandwiches and it's probably my favorite local fast-food place cause they have excellent service and excellent sandwiches too as well. In fact I like them more than Arby's.