I've been to Sushi Kaji around 5 times within the last 10 years and the quality is always great. However, the prices have spiked within the last few years, and I know that usually this reflects market value, especially since they get their fish from Japan, but it just doesn't seem worth the price tag anymore. Especially with spots like Yasu.
It is a good idea to call ahead and make reservations, as it is quite small inside so I wouldn't risk just walking in here.
The food is really good though, and the sushi/sashimi is very fresh. The dishes are creative and a nice spin to traditional Japanese food. I think that if you don't mind paying the hefty price, it is a nice spot to go to for special occasions. The thing they do differently here than Yasu is, they have cooked/hot dishes as well. If you're only looking for a sushi experience then I recommend Yasu instead.
The servers are nice, but their English is not great at all. Every dish that was served they would explain what it was but we weren't able to understand them very well.
The décor is very nice and the overall appearance of the place is very clean.