alt Hacker NewsIt varies for each person. Would need to know what you prefer in a device.
Valve's Steam Frame runs Linux that you own, but is not generally available yet if you didn't reserve one already. It suffers from LCD, low pixel density, and awful passthrough, but the software is some of the best and only getting better. In a few years Valve may offer an OLED upgrade (or a new model, but fuck that)
It should also be noted that there is a passthrough accessory if you want better passthrough.
The Steam Frame is squarely targeted as a pure gaming device where passthrough is less important.