Well everyone knows about the banana so that's a great fruit but you need to eat one at breakfast, during a ride, and one for dinner; but one that most people overlook is the Avocado, it's probably the best fruit on the planet. Avocados reduce artery inflammation, contrary to once believed thought they actually had bad fat but further study has now proven that they actually contain healthy fat, in fact those studies showed that eating a 1/2 of Avocado a day over a period of a month will actually lower your triglyceride, LDL cholesterol and total cholesterol levels. They also do something to your leptin levels so you're not as hungry thus you can control your appetite better. And the Avocado doesn't stop with those things I mentioned, it's been proven to also keep diabetes at bay because they are very high in monounsaturated fatty acids which helps to control blood sugar and insulin levels.
Avocados are kind of expensive at around $1.60 for one (price varies due to location, season and demand which is real high right now), but keep in mind you're only eating a 1/2 of one a day so the cost is more like 80 cents.
Avocados once cut will turn brown rather quickly but this method of preventing that works the best of any method so far, put a halved onion with the avocado in an airtight container overnight.
The next best fruit would be oranges.