Favorite Fruit: Mango/Magosteen. Failing that, almost any ripe fruit is amazing.
The few fruits I just cannot stand: Cantaloupe, duiran (oh, god, no!), and dragon fruit.
I'm with @GeorgePatches. Grapefruit and grapefruit juice are great. We had an orange tree, grapefruit tree, lemon tree, and lime tree in my backyard growing up in Florida. Whichever one had a ripe fruit in the morning was either juiced or served as part of breakfast. Cut the grapefruit in half and sprinkle just a bit of sugar on it. YUM! The bitter with the hint of sweet is delicious. Grapefruit has its own unique flavor, so, no, they are not rendered redundant by oranges (far sweeter) and lemons (far more sour).
BTW, limeade from fresh squeezed lime juice is amazing. If you have never had it on a hot day, you are missing out.