I would say Mandarin oranges without the skin.

But I'm also a fan of seedless watermelons, bananas, and black seedless grapes. The great thing about bananas is how incredibly cheap they are compared to other fruits. Rainer cherries are also good, but they can be insanely expensive at $7/lb. They're like bing cherries, but have a yellow/orange color to them.

I like blood oranges, but the problem with them is that they are pretty sour. I have a high tolerance for sour stuff, but blood oranges almost rank with limes and lemons.