Best Bangkok 5 Star Hotel Seafood Buffet?

I will be visiting Bangkok next month and the Mrs is very keen to feast on a seafood buffet.  I wonder if there is any consensus on which of the Bangkok 5-star hotels currently have the best seafood buffet, preferably at less than 2,000 baht per head?  We have previously tried many 5-star hotel buffets in Bangkok from the JW Marriott, to the Sheraton Grande, Sheraton Orchid, Dusit Thani, Shangri La, Landmark etc and all are good, but they tend to go through phases where at times they are better than at other times.  When I was last in town the Landmark was excellent but I hear it's not so good now, and that is why I am seeking a recommendation.  Any recommendations for a great Bangkok 5-star hotel buffet featuring seafood based on recent visits i.e. in the last few months, would be much appreciated!