cx31993 is better. The chip belongs to a relatively high level,CX31993 as the latest chip in these several, its compatibility is also the best, the appearance of the small tail body is still some progress, the metal part is a bright face scrub process, there will be no fingerprints.
es9270 is better.
The main characteristics of ESS's chips are high indicators, good decoder hifi indicators, excellent analysis, good level, and are favored by the vast number of businessmen and burn friends (especially the data party). Medium and high-end