Most citrus can be a pain in the a$$ to grow in South Florida. It requires a lot of care for the results. There are some oranges, tangerines and grapefruit that will do ok here but the quality will only be really rewarding if we get the needed chill hours to sweeten the flavors and bring the quality to where it should be. For just one, I would recommend a Red Lime. It has many qualities, its a dwarf tree, very tasty juice, edible skin without the pith, and an overall very versatile fruit.