Hi Dan, I did some homework today about " burn in" and life expectancy on the OLEDs. As you know, the Sony OLEDs use LG screens. The article mentioned that LG expects the normal life of the screens to be 100,000 hours. The same as the LEDs and LCDs.
I'm comforted about that. I also spoke with a good friend of mine who worked for Sony for over 20 years. I mentioned my concern about the screen speaker. He said Sony is WAY over the top about testing new products, and he has been to a testing facility. Knowing him for many years, I expected a very conservative response. He said, "don't think twice about it, if they make it, it's been tested ad nauseam. The burn in issue seems to be very manageable. The article advises, " after any burn in, operate the TV as normal, turn it on and off etc and it will go away". I'm hypnotized by the Sony OLED 65". I'm going in as soon as the 2018 comes out. I'll let you know!