I've only been to DLux twice, both times for lunch.
My first visit I had the chicken burger (well prepared and very moist) and shared an order of the parmesan & truffle fries which were sinfully delicious. My second lunch trip I ordered the South by Southwest salad with chicken. Great salad, except the roasted poblano ranch dressing was extremely bland.
Service seems good, and the lunch prices are reasonable. I'd definitely return to DLUX.