'Arka Sahan', a hybrid between Atemoya and Sugar apple is gaining popularity in South India. It grows and fruit well in tropical lowlands. The flavour is more like Sugar apple with a hint of Cherimoya. The flesh is smooth like that of Cherimoyas having sweet aroma. Fruits weigh about 400g and contain fewer seeds.
BTB, I am growing an El-bumpo seedling in tropical costal area. The 3 year old, 8ft seedling is very healthy and tolerate tropical sun and heavy rain quiet well. The plant drop its leaves twice in an year, although we lack 'too' cold months here. I hope, one day the plant will flower as it go dormant twice in an year.