Cheap mini-LED TVs. The U7KAU TVs are the ones with 120Hz refresh rates (not motion rate), while the U6KAU are the cheaper ones with standard 60Hz refresh rates. U7KAU also has HDMI 2.1 with 4K@144Hz but U6KAU only has HDMI 2.0.
Both 55" models have much higher contrast ratios of 4000:1 whereas the 65" have only 1300:1 for the U6 and 2000:1 for the U7, according to specs from JB.
$462 Hisense 43 Inch A7KAU 4K.
LG OLED C3 77" is $4557 or $4443.15 with Plus.