I went to Gui for the first time today. I like to feel out a sushi restaurant the first time I go by ordering the standard rolls - in this case, California, spicy tuna, Philadelphia, and shrimp tempura. I found that in Dallas, the quality of those rolls are indicative of the remainder of the menu. The first 3 were average and the shrimp tempura roll was way below average. The service - the waiter and waitress that I had were less than enthusiastic. A couple of guys working at the sushi bar seemed pretty cool though. There is no reason to go to Gui in a city that has Sushi Sake, Tei Tei, Fuse, Blue Fish and even Fish and Sushi Zushi all of which are much better than this restaurant . I wouldn't recommend Gui at all.
Pros: $20 all you can eat and drink rolls and sake on Tuesday
Cons: The food, the music is pretty lame, the waitstaff was subpar the time I went