I go there at least once every year. Personally I think it is the best buffet in Singapore. Huge variety of food. Many stations spread out throughout the restaurant. Very nice decor and ambience.
Weekday buffet lunch is the cheapest, $42+++ per person. Saturday buffet lunch is $45+++ I think. Sunday buffet is the most expensive, $80+++, which I think is not worth it. I always go for Saturday buffet lunch. For that price, you will not get anything better in Singapore.