I think i'm going to pass on this TV. It's very expensive and I see a lot of real-world people with persistent and concurrent issues. Also i had another samsung TV with problems right off the bat, and returned it. It looks to me like samsung is pushing the envelope at the customers expense - i dropped 1,200 on a samsung and it had backlight issues from the moment i got it home.
I'm just going to go with any modern, non-smart plasma tv (like the lg 6500) for a reasonable price. I can't see any reason why a non-complicated average plasma, from a reputable company, in manufactured 2013 should have any problems - and at a decent price point, if it does - it wont be as painful.