The Hisense U6K Mini Led 50 wins for users seeking better contrast and motion handling thanks to its Mini-LED panel and 144 Hz rate per RTINGS reviews, while the A6 Series 4K 50 suits basic cable and streaming at a lower cost. The U6K beats the A6 on peak brightness by over 300 nits and adds full-array local dimming zones. This is a close call only if budget is the sole priority.