As far as varietal names go, the different flavor profiles and such, and size...several sources said that for the most part, there is the one they call mayong chid, which has the sweet/little sour flavor that most people prefer. The other they call just maprang. It is smaller than mayong chid and basically just sweet. Then people started jumping on the variety name bandwagon...Kai, Wan...and now there are even more. They started giving names after their own, a province, a farm. Some claim this or that, but they are basically the same trees producing the same fruit. So, according to many of the folks who grow and sell them for a living, if it is not a mayong chid, its a maprang. I brought home 3 of each and unfortunately lost all 3 maprangs.