McDonald's, if we're talking about nation wide chain places. I also like Arby's but they're a lil expensive for fast food. I just had wisdom teeth surgery though, so I'm not going to be eating fast food for quite a while. I HATE Burger King though! Maybe it's just our local one, but my good the food is awful. The ONLY redeeming thing is that if you want a ton of soda or whatever, they had the biggest "small" I've ever seen. I think they're small is the same size as a McD's Large!
I will always prefer McDonald's over any fast food joint I know. Their chicken and famous fries will never get old for me.
For me KFC fast food is lot better. And that can be said in that case for many other fast food joints too. You can see that some of the time other fast food joints can be good too. But the thing is that KFC and similar others are lot better in many ways.