I got a Beada Panel 6P recently and I just wanted to post about how good it is in case anybody's been wondering if they should get one
Sure the screen isn't OLED but at about 70-80% brightness the black is dark enough against all your stats and graphs that you can't see the backlight shining through (when not looking at it from an angle anyway), it's matte so I'm not just looking at a reflection of my face all the time, and the machined aluminium case is far nicer than anything I could ever build myself.
I did have a tiny problem where at first boot it would only show a black screen, even though it connected to AIDA and let me adjust the brightness, which initially made me think the unit was faulty, but it fixed itself when I just unplugged it and plugged it back again. This also happened after using the online Beada Tools utility to access the internal storage, but again a power cycle fixed it, and it doesn't happen after normal PC reboots so it doesn't really bother me.
It sure as hell beats the kiosk mode raspberry pi + RemoteSensor I was using before, at least this one talks to the PC via the cable and not wifi 🙃