The LG G5 OLED 83 wins decisively on performance and features with 144Hz refresh and perfect contrast per RTINGS tests, beating the Hisense U6K on motion clarity by a wide margin. The Hisense U6K 75 provides solid brightness for the price but trails in refresh rate and viewing angles. LG G5 is the clear choice for gaming and movies while Hisense suits budget bright-room setups.