Fruit can be expensive, so it makes sense to buy the healthiest you can find.
The following varieties have the most nutrition for their cost, are low in sugar and toxic pesticides, and have plenty of vitamin C, fibre, folate and potassium:
apricot
avocado
banana
grapefruit
honeydew melon
kiwifruit
orange,
nectarine
papaya
pear
rock melon
star fruit
tangerine
watermelon
Source: Environmental Working Group.