The LG G5 OLED 83 outperforms the Hisense A6 Series 4K 75 with perfect blacks and 120 Hz motion per RTINGS and CNET tests, while the Hisense provides a larger affordable LED option. The LG wins on contrast and features but trails in value for budget buyers. Hisense A6 is better for casual bright-room use; LG G5 excels in dark-room cinematic viewing.