Oculus Rift S Vs. Oculus Quest: Display
The Oculus Rift S and original Oculus Quest are both aging hardware. The Rift S has a significant display update over the Rift CV1, ditching the deep blacks and light whites of dual OLED for a single LCD. It has a combined resolution of 2560×1440 (1280×1440 for each eye) that is lower than the Quest's 2880×1600 resolution (1440×1600 for each eye).
Comparing the displays gets complicated because you can't just look at raw numbers in some cases. The Oculus Rift S uses an RGB stripe design compared to the Oculus Quest's diamond pentile design. You can also order oculus quest 1 & rift s prescription lenses online.
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In non-technical terms, the Oculus Rift S's screen appears clearer even though it has fewer pixels because of how it places pixels on its panel.
Additionally, the Oculus Rift S has an LCD panel while the Oculus Quest has an OLED display. The OLED panel of the Oculus Quest offers deep blacks and high contrast, but the LCD panel of the Oculus Rift S has a faster refresh rate (80Hz vs. 72Hz).
Both the Rift S and the Quest deliver a picture that has a less screen-door effect (SDE) than older models, meaning you won't see as much of a grid over the presented picture when you focus firmly on the display.
The Quest adjusts IPD with a slider, giving you a much better chance of getting a perfect view even if your eyes have uncommon spacing.