I love Kaoi Sushi. They've been around since the beginning of time. I remember coming to Sino Mall as a child for some good old grub. Only in the later years did we venture out to get Kaoi Sushi - but we've always been impressed.
They are good for catering and regular orders. Their prices are reasonable and the staff are extremely friendly.
And now that the mall itself has gone under a recent renovation, the facilities are definitely more comfortable than ever. So check it out!