Luc my mental abiu classification goes a bit like this.All the good named ones are spherical,1lb to 2.5lb, low latex,rich taste,low bruising and few seeds as well as being productive.The rest get called brumbies and the difference between good and bad is dramatic.The broad leafed lowest latex ones like E4 have thin shiny skin and nipples and yellow flesh.The other group is z4,z2 (marisa?),gray,inca gold and one or two others.They are similar to each other but vary a bit in color,taste,how they ripen etc in a modest way.Gray was sent to Whitman and his fruit had rave reviews and no doubt offspring will be in Florida.
Poorer abiu stain and bruise easily,are elongate,small,seedy and have annoying latex.They seem to be almost true to type from seeds.
Z4 has some cold tolerance and can grow in the sub tropics as can marisa but the others haven't been tried.Thee are 1kg ones from Brazil but it looks like they have much latex and are prone to bruising.There must be great south american ones that were the progenitors of the Australian ones and maybe even better types.No one can seem to find them.
