There were plenty of fruits on my two soursop trees from the Arusha selection this season, and because of the rainy weather they keep flowering with more emerging fruits. The smaller tree had around 60-65 fruits - and a few were consumed by the mouse birds. They are relatively sweet and with less fiber than other fruits I have tried.
Seeds are available for trade.!
I can add that my friend Wirsiy Fondzenyuy from Cameroon got 34 fruits in the second season from a seedling of mine - so it also performs well in other locations than East Africa.