Sony X90J vs Samsung Q80B [Q80, Q80BD] QLED

The Sony X90J is better overall than the Samsung Q80B QLED mainly due to their panels' different strengths and weaknesses. The X90J is a better choice for dark rooms because it has a much higher contrast, the local dimming is better, and there's less blooming around bright objects. On the other hand, the Q80B is better for wide seating areas because it has a wider viewing angle. Although they have many of the same gaming features, like HDMI 2.1 bandwidth, the Q80B is still a better choice for gaming because it has FreeSync support and lower input lag.