Longtime lurker, first time poster. Love my 55C6P, had it almost 3 years and only 2,800 hours on it. I'm trying my best to take care of it since it might be a while before 3D makes a comeback. After watching widescreen movies I notice a little image retention (I think). There are faint lines that show up where the letterbox bars were. The faint lines are usually only noticeable on Amazon's grey startup page, and they go away after watching full screen content for a while (or after the 4 hour pixel refresh). Is it a good idea to watch fewer widescreen movies? I have read that tests so far have not shown much danger from pixels wearing out unevenly due to widescreen movies, but I want to be as careful as possible with this awesome 3D TV.
That being said, I'm not going to worry too much. We need to enjoy what we have, and those of us lucky enough to have 2016 3D OLED TVs should have some very cool 3D watching ahead of us for at least a few years. I just feel bad for people buying 2D TVs who won't get to experience Ragnarok and Guardians and Dr Strange and even The Great Wall in all of their 3D glory.
And Thank You to all of you smart people for all of your posts! I have learned a lot by following this thread these past couple of years.
The Dude Abides