I have a TCL Roku TV that I use disconnected and with an Apple TV. It still has annoyances here and there, like pausing for three seconds or so on every startup before it switches inputs. I’d pay a mild premium to not have that.

I've noticed that older TCLs are a bit laggier than Samsung smart tvs. Nice to have one that actually has a fast response to the remote. There was an app that was super slow on it- one of the less popular streaming apps. Although when the firmware updated, it might have erased the entire account and started anew. The Google Play store manages the apps, so I would imagine they get purged when they aren't up to the latest requirements. I am not sure how long the Android/Google OS version would get supports though).

Same. Our data is worth a lot I guess (not the whole differential but):

$627 - commercial display

~$200 - comparable invasive options