Thanks to all who offers suggestions on this. My trip was far too busy to take advantage of anything beyond the Miami beach whole foods (where i got some nice Mamey sapotes for $6.99 a pound, ataulfo and Madame Francis mangoes). Alas, next time at least I have some other reference points to scope out. For the minute (well less than 25 hours) I was in Barbados, it looked good. Mangoes are coming into season (I had no time to get anything locally) and there were plenty of breadfruits. I saw some sugar apples here and there and had a local describe some of the other fruits which were unfamiliar to me "(duncs" anyone?)