Where the best crude oil in the world?

I copied the answer from another ask,

Crude oil is a very complex mixture of hydrocarbon compounds with some inorganic compounds. Simple quality terms (light/ heavy and sour/ sweet) are defined for convenience and are inadequate terms to fully characterize the crude.

However, as discussed in the links, a crude that has less than 0.5% sulfur content is sweet crude. Oil that is between 37 to 42 degrees API in density is light oil. Other definitions exist (see link), however this appears the range used for US produced crude.

Light sweet crude will sell for higher prices than other grades, (Heavy sour, heavy sweet, light sour). Many countries produce light sweet crude including Russia, Saudi Arabia, Iraq, Brazil, Angola, Nigeria, and the US.

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