I'm pretty shocked that there are so many bad reviews and rating.
I've been going to Sushi Kui for about 6 years now and I swear they have the best sushi in town. I don't know anybody personally who has gone and not liked it.
It can get very busy around lunch time but I've never had to wait super long.
The only time I have had to wait is when I do pick up (I know, I know sushi taboo)
Plan to come pick up your food 10 min after they say it will be ready.