Can’t see why the non-smart option would be better than the no-internet option. I’d try to find one that can be upgraded from a USB stick so you don’t even need to connect it occasionally.
It’s a Smart TV in theory but we have never used its ‘features’. It’s not connected to any network and it doesn’t seem to try to connect to wifi sneakily.
Audio is connected out to an amp and speakers and sounds fine.
If it ever breaks (not sure if LCD has a finite lifespan) we’d probably get something similar but would be checking it has the same ability to just act like a monitor with auto input switching and audio out.
Samsung TVs menus and response times are crap, however. Not sure how they are so wildly popular.
The smart features are indeed slow on most TVs. Boot times vary.