Pleasant tasting Pitangatuba does exist.
I had one. My toddler killed it.
I purchased it as a seedling from eBay seller. Seller name is 9water.
It was 4 years old when it first bore fruit. Only 2 fruits, but they were big, lot or flesh, juicy, sweet with just a correct amount of tanginess. It had tropical flavor and apricot after taste. It was so good that i transfferred the tree into the ground, but my son pulled it out without me realized it until the next day.
I want to buy another seedling from 9water, but it took 4 years to bear fruit...