Samsung NX500 scored high marks during the DXO Lab test examination. According to DXO Mark Lab NX500 ($599) will give you similar result compared to Nikon D7200 ($1096). The camera scored 87 points during the test and the low-light score was 1347.
Samsung NX300 camera delivering excellent result for its price category, take a look at images below
also take a look at the score against fullframe mirrorless camera
Buy Samsung NX500 from Amazon | B&H
Also take a look at – Firmware Upgrade – Samsung NX500 Gets Significant Improvements in AF and Video