The TCL S551G is decent for mixed usage. It doesn't really stand out in any area, with decent brightness and an okay contrast ratio, so it's best suited to watching shows or playing games in moderately lit rooms. While it has good reflection handling, it doesn't get bright enough to really overcome glare in bright rooms. On the flip side, it's decent for dark room viewing, but it lacks a local dimming feature to improve contrast. It's a fine TV for gaming as well, with low input lag and a quick response time, although it doesn't support modern gaming features like 4k @ 120Hz or HDMI 2.1 bandwidth.