I ate last night at Bobby Flays burger bar attached to a casino in Lithicum Maryland. (Baltimore suburb). I ordered the crunchy bacon cheese burger med rare. It was one of the best burgers I've ever ate.
I've been to both Chris Madrid's in San Antonio and Hub Cap Grill in Houston. Both are outstanding; quite frankly there are other burger places not on the list that are just as good; but probably none better. But most burger places are not as good. What I always care the most about are really good fries; something more along the line of what you get in Germany or France. Fresh out of the fryer, crisp and just salt, and a lot of it. There are more places with good burgers than with truly outstanding fries.
Quite frankly, it has been a few years since I have been to either. Hub Cap is just few blocks from the office and now would be a great time to go (mostly outdoor seating) before it gets really hot outside.