Get Sony Alpha A6000 mirrorless at B&H Photo.
How good is the sensor in the Sony A6000?
In this study, an ideally-exposed image at ISO 100 is examined for any noise. RGB crops are shown along with individual R/G/B color channels and RawDigger info and histogram.
Also added is an aperture series looking for sensor quality from f/4 through f/16, focusing on the effects of diffraction.
Of great interest to me is that the sensor photosite density scaled up to full frame would be 56 megapixels. Things might get interesting with such a sensor and with appropriate electronics.