Which is better for a bright living room?

The S95D. Its matte Glare Free coating and QD-OLED brightness hold up against windows and lamps far better than the glossy 83-inch OLED.

Which is better for gaming?

The S95D. It runs up to 144Hz with about 8.9ms lag and has four HDMI 2.1 ports; the QN83S85HA tops out at 120Hz with fewer high-bandwidth inputs.

Is the 83-inch worth stepping up to?

Only if size matters most. You gain about 6 inches over the 77-inch S95D but give up QD-OLED color, the matte coating and gaming features.

Which has better picture quality?

The S95D. QD-OLED adds quantum dot color and more brightness, and reviewers consistently rate it above standard OLED sets.

Do either support wall mounting?

Yes, both use standard VESA mounts. The S95D's slim panel and One Connect box make a flush wall install easier.

Both are OLED and carry similar panel-life expectations. The S95D's extra brightness headroom and glare coating make it more comfortable to live with day to day.

Samsung S95D OLED TV vs Samsung S85HA 83-Inch OLED 4K TV

The S95D is the stronger TV: a QD-OLED panel with a matte anti-glare coating, four HDMI 2.1 ports and up to 144Hz, which suits bright rooms and gamers. The QN83S85HA is a larger 83-inch OLED, so it wins on sheer size for big rooms and movie nights. Owners praise the S95D's glare handling and color; the 83-inch set trades some brightness and gaming features for screen area.

Choose the Samsung S95D if you want the best picture quality, glare resistance and gaming features in a 55 to 77-inch size.
Choose the Samsung QN83S85HA if you have a large wall and want the biggest OLED screen for movies and sports.

Prices

Samsung S95D OLED TV: $2,399.99 at Lowe's (last seen Nov 10)
Samsung S85HA 83-Inch OLED 4K TV: $2,904.99 at Newegg (last seen Nov 10)
Difference: the Samsung S95D OLED TV is $505.00 cheaper than the Samsung S85HA 83-Inch OLED 4K TV at the latest prices (Nov 10)