Out of the options listed, I would rank them in this order.
5. Burger King
BK and KFC are just plain sad anymore. The Whopper lost it's way and KFC's chicken tasted like an overpriced salt lick(this coming from a salt-a-holic). McDonald's is, well McDonald's. Not much needs to be said about them. I enjoy Sonic from time to time, but I rarely go out of my way to eat at one. Actually, the last time I went to one was just to get a couple of bags of ice. Of the ones we had to choose from, Wendy's tops the list due to their spicy chicken sandwich and better tasting burgers.
Going outside the parameters, when it comes to fast food chicken, Popeye's and Chick-Fil-A top the list.
The best place for fast burgers at a decent price? Cookout. You can get a grilled quarter pound burger and a large fry for under $5, and it's much better than Five Guys. I do enjoy Five Guys though, but it makes no sense to pay four dollars more for the same thing, when Cookout is practically right next door in neck my of the woods. They also make really good shakes I might add.
Might as well add sub chains to the discussion. Subway is not very good, nor worth it, as none of their foot longs should cost more than $5. Panera is good but overpriced for what you get, and Quizno's is never convenient, nor worthy of the cost as well. Of all the chains, Jason's Deli and Firehouse offer the best bang for your buck.
<message edited by Raiders757 on Sun, 12/2/12 1:15 PM>