Went to the Deerfield location today, with my mom, at her suggestion. We went in shortly after 1, there were a few people in there but definitely not crowded. Ordered our burgers, hers the "ampersand (bacon/gouda/fried onions)without the fried egg" and I had a blue something or other (blue cheese, garlic aioli, tomato and avocado) medium. To their credit, that burger was indeed medium!
Unfortunately, the avocado was not ripe. It was pretty, but pretty hard, something anyone with experience in the kitchen should have known. No one walking around to tell about it and I didn't feel like going up to the line so I figured I'd suck it up. Ultimately the manager walked past and we flagged him down. I told him we I really liked the garlic aioli, but that the avocado was not ripe. He said something like, "oh sorry" and I suggested that maybe they shouldn't SERVE them when they aren't ready. "Good point."

Then he asked if we had tried the sweet potato fries, they're great with the aioli, so my mom (being of a certain age) said "we'd like to try that, the sweet potatoes with the aioli, to make up for her (me) not getting avocado on her burger." The manager said "oh, I see" and did come back with a small plate of the fries and dipping sauce. My mom thought it was appalling that he didn't think of that himself.
Didn't care for that space-age soda machine, guess I'm just a low-tech pop drinker, and my mom thought the diet coke tasted funny.
I liked being served on real plates vs paper wrap, the silverware was pretty solid and the glasses were real (plastic but again, not disposable). I still think that Townhouse, where Red Star used to be, had a much better burger. That was probably a couple bucks more, plus tipping, but $10 for a burger still just feels high. Still, and I think my husband would like this so we'll probably give it one more try.