The problem with Gefner and Lisa, to some extent, is that the quality is not consistent all throughout the season. From the same tree, Gefner fruits could be both excellent best of Atemoya and bland worse of all Annonas. Lisa also has this problem once the tree has reached a certain size/height (my guess 5-6 feet tall). African Pride also suffers this quaility irregularity. Phet Pakchong doesn't seem to have this prolbem maybe because it's a Sugar Apple backcross. But I have yet to taste a US Phet Pakchong...