Qdoba's queso sauce is IMO some of the best stuff you'll ever eat. I had never ate at my local 2 Qdoba's until they opened a third, and our store did some of the signage for the place. We went the day before it opened to put some lettering on the front door (about a 2 minute job), and they invited us in to try some of the food. They were having one of those friends and family things most stores do before opening to let the employees and their families try whatever they want, free of charge. That was the first time I ate there, and have ate there multiple times since.