Came here yesterday for lunch and really loved the lunch bento selections! I wish I could have picked all of them but ended up with the chirashi lunch selection for $13.50
I really loved the side dishes but would probably not pick the chirashi bowl again because it just felt like I was eating just deconstructed sushi nigiri...
I'm not sure about dinner at DonDon since I'm sure it would be busy like Guu but I would definately recommend lunch! Fair price and tasty!