actually one of the best burgers use to be from Carl's Junior. But don't try, the only way you're going to get an awesome burger from them is to travel back in time. Pretty dusgusting now. Even Fuddruckers has lapsed some from what it was, but it's still the best burger out there now.
If they don't ask you how you want it cooked, it's not going to be a good burger. Fuddrucker's still does, all the rest pretty much bailed during the e-coli scare and what you get is well done, dry and void of anything resembling meat.