When I want good quality sushi and don't want an AYCE sushi then I usually go to Prince Sushi. For AYCE I like Heart Sushi, because of the tablet system.
I like the cozy ambience and the way it's neatly and well furnished, making it look slightly upscale but yet casual. I've been here several times and seems to be one of the few restaurants that get filled up in that area of Courtney park, while several other surrounding restaurants get literally no customers all day.
Service is always good whereby the water is constantly being refilled. I really enjoy the sushi as they don't fall apart and are a good size. Although recently due to my experience at Hiro Sushi, my standards for sushi has gone a tad higher. But nevertheless, the quality of food is good and this is my to-go-sushi place.
I've also got the Udon noodle bowl once, which was a good large size with a subtle and pleasant flavor.
So, if you're looking for good quality sushi without breaking the bank then this place is definitely worth a shot.