> 10 times out of 10 I could tell an OLED font rendering to LCD. I wish I couldn't.

I second this. I can tell, and I would never wish that ability on my worst enemy. Very glad there's a (slim, but exists) market catering to that — and that I no longer have to buy a monitor that costs as much as a small motorcycle to not be constantly infuriated at everything in my field of vision when working.