Bananas can either be mild flavored, or sweet depending on ripeness.
For sweeter ripe bananas, look for firm bananas that are mostly yellow. Hold the bananas by the stem to make sure they hold together. Bananas are fine when they brown, but avoid buying them like this, they will go bad quickly.
For less sweet bananas, opt for greener bananas, they will continue to ripen at home.
When baking with bananas, allow them to ripen until they are mostly brown and soft, this will give you the proper banana taste.
India - 25.7%
China, Mainland - 11.5%
Indonesia - 6.2%