Mrs. BD and her pal had the best burger in their lives in Mississippi in a road trip to Houston last winter, in some redneck dive place with fancy burgers.(nb: Redneck is not a disparagment on Maggie's).
General rule of thumb: Always avoid disgusting chain places. The hole in the walls have the best stuff because they have to compete.
One of my cool daughters emailed me about the best burger she has ever had (visiting a college pal in Nashville): cream cheese, jalapeno jelly, and grilled jalapenos. I feel hungry now despite a filling lobster salad for lunch with a glass of chardonnay. Life is pleasant in the USA.
Yes, I make a mean jalapeno jelly from my garden each year. Good with cheese. My kids steal the jars from the pantry.