Naa chang daeng also is from Taiwan, i ate it a few times...huge red mango, very nice...better than the other huge one called Jakrapat...which is Yu-Wen in taiwan.
But those huge mango's sometimes have issues inside where they are overripe or so.
I also grew chang daeng in the past, it made very long drooping branches as well and had huge leaves...
All those new improved varieties from Taiwan are great, also for guava's , wax apples and annona's.