Do you have Five Guys in NE yet? Big hit around here. Good, greasy burgers with anything you want on them. Good fries, too, they make them in-store. They'll have signs up where that batch of potatoes is from, just beware that a large fry there has gotta be about 3 big potatoes worth. You can feed a family on a large Five Guys fry.
I miss Don & Millies for an awesome, greasy burger and a strawberry shake. They still around?
The Cadillac of burgers in Chicago is Kuma's. They play heavy metal music and movies like A Clockwork Orange and they make GIANT burgers with all kinds of great stuff on them. They're putting one in a few blocks from my house and thank God my work put in a gym or I'd probably be riding a rascal scooter within 10 years from eating The Pantera at least once a week.
https://kumascorner.com/#menu