Short Answer: Satsuma!
Long answer:
The perils of choosing a fruit and then choosing a variant of that specific fruity family can be negated by relying on the humble Satsuma!
This is my all-time fave as they are nearly always fresh, tasty, juicy, easy to peel, make a satisfying noise as you separate the segments, free of seeds and generally good value. You know where you stand with a Satsuma.
Grapes are really handy for snacking on the go and ideal for musicians as you can pick at them during rehearsals in between playing. Same with Melon and Strawberries, but all of these can get quite manky.
I have an apple a day as well, which is more of a chore than a pleasure, but by sticking to crispy Braeburns (or if you're feeling flush, a Pink Lady) you can usually get a nice taste and texture (unlike the mushy pulp of a Gala, or the tongue burning tanginess of an over-juicy Cox). Sometimes a Golden Delicious can make a nice change, but they pretty much perish under your nose the second you start biting into them!
I have never had a pear and never had a banana as I don't like them....
But I LOVE banana cake and love the general look of a banana - they are probably the only fruit with a bespoke, tailor-made carrying vessel.
I have recently tried Kiwi and Avocado for the first time... neither of which made a lasting impression.
Pineapples deserve a shout-out for being the most decorative of fruits and I would buy these for display purposes only as I don't like the taste/texture.
Whoever thought of putting them on pizzas has probably been smoking too much pineapple.
In juice form, Pineapple isn't so bad, but cloudy Apple juice is the winner in that category.
The Kumquat is indeed a curious little artefact - I've been out for meals with several people who have not dared eat the decorative Kumquat that adorns their dessert for fear that it is a poisonous berry.