There are two different varietals of jackfruit: one with firm/crunchy flesh (this is the kind you see canned in stores) and the other with creamy. Durian is like the jackfruit with the creamy flesh (in texture), but durian's fruit is larger. They have a similar mouthfeel (and taste: to me, that is), but the smell puts off a lot of people. Unfortunately you don't get the creamy jackfruit in a lot of places so you have to hunt for it. Luckily my parents have a tree in their back yard....