I’m just using a Dell PC monitor (21" 1080p) from like 2010. It supports HDMI but I don’t know about CEC. Either way it could just put the monitor to sleep and that would be fine, doesn’t require CEC. I just am not sure of a way to trigger this manually when I’m done using it.
Same. I put together a knock off Prusa i3 kit in 2014 that cost me like $600 and most of the parts were themselves 3D printed. Not a bad thing but they were really rough prints. It printed OK for the time but was an endless source of annoyance. In comparison, the Ender 3 Pro just basically worked out of the box with minor bed leveling tweaks and everything else has just been minor quality of life improvements. It’s great.