The "mon thong," the Thai "golden pillow," is the variety most often commercially exported to the United States, and only after being frozen before shipment. Thawed and husked, it has a custardy texture and (despite the awkward pungency of a junior high gym) is very sweet.
Compare the fresh durian below, a cultivar nicknamed "sultan" and "Bukit Merah" but best-known simply as D24 (sold by weight; S$15, about US$11.25 at the time). That large pale yellow lobe was relatively firm, gently sweet but with nutty and even faintly bitter notes, and lushly perfumed. My durian dining partner and I polished it off expeditiously, then — after the proprietor split the husk a second time, freeing three smaller lobes — continued at a languorous pace.
King of the King's Durian
Chinatown Complex Food Centre (ground floor, outside), Singapore
(From a summer 2010 visit)