My #1 place to avoid is Chipotle.
First visit. Mrs swsig and I found the food to be mediocre and the "music" so loud, we had to eat outside on a Texas summer day.
Second visit. A year or so later, a friend of Mrs. swsig wanted to meet there for lunch. The food was mediocre, and they both got sick.
Third visit. Several years pass, and another friend of Mrs. swsig wanted to eat there for lunch. Mrs. swsig tried to dissuade her, but she insisted. The food was mediocre, and they both got sick.
Fourth visit. Another year passes, and Mrs. swsig and I are in Kansas City visiting our son and his family. They all want to go to Chipotle. We protest, telling them how bad it is. They insist anyway, saying the one they go to is great, so we go. This one serves alcohol, and against my better judgement, I order what Chipotle claims to be the world's best margarita. It had no discernible flavor, and no discernible alcohol. It was basically melted ice, and was BY FAR the worst margarita I've ever had. The food was still mediocre, but at least, in a minor triumph, nobody got sick.
No one is ever going to talk either one of us into going there again, no matter what they say.
Chipotle also has had several instances of widespread food poisoning. It's amazing that they're still in business.