There is plenty to collect for Jab fans and loads of variations in Phitrantha, coronata, aureana, cauliflora and the other 5 or 6 notable blacks. I have cast aspersions of yellow jabs before but acknowledge some selections of the common yellow are good and there are even big fruited selections around which must be good.
What has sparked my interest and attention with plinias in recent years are some of the tropical whoppers which are the must have that few people have. Mulchi both giant and standard are attention grabbers. Just 70km or so away from where these are found id Plinia sp. shawii with whopping apparantly tasty fruit on a fairly big tree, Plinia clausa seems to be a prince amongst plinias with tasty fruit and Plinia yasuniana a semi dward with 30mm fruit is a newer attention grabber.
At the other end of South America is the cambuca another big yellow fruited Plinia of note. If we can call these species jaboticabas, then these are the species of jaboticaba that excite me and the measure of a collectors' success.