OK, this is a great and very informative Thread.
If we were to keep in mind that the quality starndard bearer is the Anon (Sugar Apple), then of the following list of mentioned cultivars, which is the overall best in terms of productivity, fruit size and taste, and in what location does it grow best:
Biriba
'Carlos'
'Fernandez' (Excellent according to Cuban007)
'IMHO' (Excellent according to Cuban007)
'San Pablo' (Excellent according to Cuban007)
'Sarteneja'
Am I correct to assume from the deliberations on this Thread that the 'San Pablo' comes out ahead? Whatever the case may be, the 'San Pablo' and 'Fernandez' look very impressive. All the details on grittiness, sweetness, seedyness... is greatly apprecieated.