I tried both places in the same week. The wait was shorter at Yamazaki and it was a bit cheaper as well. There was less monitoring of the line, which could have been a hassle (luckily the people around us were honest and didn't try to go ahead of us). There are more menu options here than Sushidai. We ordered the 10 piece omakase. It was really good, but it lacked the more unique fish. Also, the tuna wasn't as fantastic as Sushidai. Don't get me wrong, it was good but just not as great. The sushi is served all at once on a platter, so you have to wait till the whole thing is prepared. Not a big deal, but just a note. Overall, it's better than some if the other places nearby, but in my opinion not as great as Sushidai. I recommend Yamakazi if you want a shorter wait.