Summarize:

As with all fruit, papaya is the best when locally grown and picked. If it is available in your area, pick or purchase it for the best taste. If not, try to choose fruit imported from areas closest to your location to insure freshness and flavor. This papaya is grown in Hawaii and Costa Rica, and is known for a small to medium sized fruit with sweet, yellow flesh. Mexican papayas are much larger than kapaho papayas, and have orange or red flesh on the inside. They are known for the tendency of having a bland or bitter flavor.
Pick local fruit. Try kapaho papaya. Try a Mexican papaya.