Which is better for gaming, the LG C6 or Samsung S90H?

The LG C6 is better for gaming. It has four HDMI 2.1 ports, supports both G-Sync and FreeSync, and offers a 165Hz VRR mode. The Samsung S90H has HDMI 2.1 and VRR but lacks official G-Sync/FreeSync certification.

Which TV handles bright rooms better?

The Samsung S90H handles bright rooms better thanks to its Glare Free coating, which reduces reflections. The LG C6 is brighter in peak highlights but its screen is more reflective.

Which has better sound?

The LG C6 has a 2.2-channel 40W system with AI Sound Pro that up-mixes to virtual 11.1.2. The Samsung S90H has a 2.1-channel 40W system with Dolby Atmos and AI Sound Controller Pro. Both are good, but the LG offers more immersive virtual surround.

Is the Samsung S90H worth stepping up to over the LG C6?

Only if you prioritize a glare-free screen and Samsung's Tizen smart features. The LG C6 is better for gaming and has more HDMI 2.1 flexibility. Otherwise, they are close in picture quality.

Which TV is more reliable?

Both brands have similar reliability records, but the Samsung S90H has some owner reports of hardware failures after a few months. The LG C6 has fewer such reports, but no TV is immune to defects.

LG C6 65" OLED evo TV vs Samsung S90H OLED 4K TV

The LG C6 is the better all-around OLED for most people, with four HDMI 2.1 ports, support for both G-Sync and FreeSync, and a brighter evo panel. The Samsung S90H counters with a glare-free screen that handles bright rooms well and a polished Tizen smart system. Choose LG for gaming and connectivity, Samsung for a bright living room and Samsung ecosystem integration.

Choose the LG C6 if you want the most gaming-ready OLED with four HDMI 2.1 ports and both major variable refresh rate formats.
Choose the Samsung S90H if your room gets a lot of light and you want an anti-glare screen with a fast, polished smart TV interface.

Prices

LG C6 65" OLED evo TV: $1,339.99 at Amazon (last seen Nov 8)
Samsung S90H OLED 4K TV: $1,047.99 at eBay (last seen Nov 9)
Difference: the Samsung S90H OLED 4K TV is $292.00 cheaper than the LG C6 65" OLED evo TV at the latest prices (Nov 8 and Nov 9)