For free buffet, the DT Times Square, free for two if diamond or gold.

Hilton TS has a good buffet that is free for diamonds, not sure about gold's.

The Fashion District has included hot items on their buffet for at least the past year, but nothing to write home about. I only get the buffet there if I am in a hurry and get ala carte normally. Lot's of a good ala carte free items.

I like the Fashion District Hilton in general. Great location and staff. Only downfall to that property is no suites, your upgrade is to a higher floor and corner room.