I've probably been here at least 10 times. I work in the area, and it's high on my list for lunch.
The first thing that may be helpful to know about DLUX is that it's pretty much a lunch and late night establishment. I wouldn't recommend it to someone that's "going out for dinner." You certainly could eat some good food during the dinner hours, but I think you can get the point.
I love the Pimento Burger -- check out the photo. It's quite unique, but it's not going to make any simple folks uncomfortable. The bell pepper jelly on it is fabulous. I've tried all of their burgers, and I would not hesitate to order any one of them again. The milkshakes are excellent. Get the peanut butter, or the raspberry (I think it was raspberry) -- see the picture I uploaded.
The atmosphere is fresh, fun, and I'd even consider it relaxed. The staff is pleasant and very attentive.
Why not 5 stars? I think the meat on the sandwiches could use a little extra flavor. There's just something missing. Everything else on them makes up for it though.