At Zills, back when the "Jakarta" originated, 'Paheri' was considered to be synonimous with 'Bombay.' "Jakarta" was a misnomer which stuck, for a seedling of 'Bombay', and was thought to have been fathered by 'Kent.'
Among many mango conoseiurs, "resinous" is not a bad word at all; resin is a category of "Spicey"--- much sought after. Examples of resinous mangos include 'Extrema', 'Rosa', 'Carrie', 'Valcarrie', 'Graham', 'Turpentine' (for wonderful juice), 'Gary', and yes, "Jakarta."
I agree that you should taste a mango and like it before you bother to plant it in the ground.
Even if you like "Jakarta" you should only plant it if you have room for many mango varieties.
Defects. "Jakarta" production is usually poor to mediocre. They are high on the Best-Mangos-List of woodpeckers! Coloration is usually mottled green-orange-red-yellow, not a problem. The occurrence of internal defects probably is from some varieties' being less efficent users of Calcium and Boron and Zinc--- this is speculative. Tree size is the normal too vigorous, too large.